Richard Clark v. Kevin Chappell ( 2019 )


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  •                   FOR PUBLICATION
    UNITED STATES COURT OF APPEALS
    FOR THE NINTH CIRCUIT
    RICHARD DEAN CLARK,                     No. 14-99005
    Petitioner-Appellant,
    D.C. No.
    v.                   3:97-cv-20618-WHA
    KEVIN CHAPPELL, Warden,
    Respondent-Appellee.             OPINION
    Appeal from the United States District Court
    for the Northern District of California
    William Alsup, District Judge, Presiding
    Argued and Submitted April 16, 2019
    Pasadena, California
    Filed September 5, 2019
    Before: Consuelo M. Callahan, Sandra S. Ikuta,
    and John B. Owens, Circuit Judges.
    Per Curiam Opinion
    2                      CLARK V. CHAPPELL
    SUMMARY *
    Habeas Corpus/Death Penalty
    The panel affirmed in part and vacated in part the district
    court’s denial of Richard Dean Clark’s habeas corpus
    petition challenging his California conviction and capital
    sentence for the first-degree murder and rape of a 15-year-
    old, and remanded to the district court for reconsideration of
    one issue in light of Godoy v. Spearman, 
    861 F.3d 956
     (9th
    Cir. 2017) (en banc).
    Because the habeas petition was filed before April 24,
    1996, the panel applied the standards in effect prior to the
    implementation of the Antiterrorism and Effective Death
    Penalty Act of 1996.
    The panel held that Clark’s five certified ineffective-
    assistance-of-counsel claims are unavailing because (1)
    Clark did not show that trial counsel’s performance fell
    below an objective reasonableness standard at the time of
    trial or (2) in the few instances in which counsel’s conduct
    was deficient, Clark has not shown that there is a reasonable
    probability that the outcome would have been different. In
    light of Godoy, the panel remanded for further proceedings
    on Clark’s certified claim that his rights to due process and
    an impartial jury were violated when a juror communicated
    with his minister.
    *
    This summary constitutes no part of the opinion of the court. It
    has been prepared by court staff for the convenience of the reader.
    CLARK V. CHAPPELL                         3
    The panel rejected the state’s argument that three of
    Clark’s ten uncertified claims are procedurally barred from
    federal review, and granted a certificate of appealability on
    six of the uncertified claims. Affirming the district court’s
    denial of habeas relief on two claims, the panel concluded
    that Clark did not establish any actual conflict of interest that
    adversely affected his representation. Affirming the district
    court’s denial of Clark’s claim that trial counsel was
    ineffective for failing to present life history evidence at the
    penalty phase, the panel concluded that trial counsel’s
    presentation of life history evidence was not deficient.
    Affirming the district court’s denial of Clark’s claim that
    trial counsel was ineffective for failing to rebut a jailhouse
    report, the panel concluded that counsel’s performance was
    not deficient. Affirming the district court’s denial of Clark’s
    claim that he was denied his Sixth Amendment right to be
    present for critical stages of the proceedings, the panel
    concluded that Clark did not explain how his presence at two
    meetings regarding possible conflicts of interest with
    counsel had a reasonably “substantial relationship” to his
    ability to defend himself. Affirming the district court’s
    denial of Clark’s claim that habeas relief is warranted under
    Brady v. Maryland, 
    373 U.S. 83
     (1963), because the
    prosecution failed to disclose two pieces of exculpatory
    evidence, the panel concluded that there is not a reasonable
    probability that the result of the proceeding would have been
    different if the evidence had been disclosed to the defense.
    The panel affirmed the district court’s denial of relief on
    Clark’s claim that cumulative errors denied him a fair trial.
    The panel denied a COA on the remaining uncertified
    claims.
    The panel affirmed the district court’s denial of
    evidentiary hearings for all claims except the juror
    misconduct claim as to which the district court will
    4                   CLARK V. CHAPPELL
    determine on remand whether an evidentiary hearing is
    warranted.
    COUNSEL
    John R. Grele (argued), San Francisco, California, for
    Petitioner-Appellant.
    Alice B. Lustre (argued), Deputy Attorney General; Glenn
    R. Pruden, Supervising Deputy Attorney General; Jeffrey M.
    Laurence, Senior Assistant Attorney General; Xavier
    Becerra, Attorney General; Office of the Attorney General,
    San Francisco, California; for Respondent-Appellee.
    OPINION
    PER CURIAM:
    California state prisoner Richard Dean Clark appeals
    from the district court’s denial of his 
    28 U.S.C. § 2254
    habeas corpus petition challenging his conviction and capital
    sentence for the first-degree murder and rape of fifteen-year-
    old Rosie Grover in 1985.
    On appeal, Clark raises sixteen claims, of which six were
    certified: (1) ineffective assistance of counsel for failing to
    advise Clark to accept a plea offer; (2) violation of Clark’s
    rights to due process and an impartial jury by juror
    misconduct; (3) ineffective assistance of counsel for calling
    Dr. Mayland to testify at the pre-trial suppression hearing;
    (4) ineffective assistance of counsel in preparing and
    presenting expert testimony; (5) ineffective assistance of
    counsel for failing to investigate and present evidence of
    CLARK V. CHAPPELL                       5
    Clark’s fetal alcohol exposure, traumatic birth, and the
    ensuing effects from both; and (6) ineffective assistance of
    counsel for failure to argue that Dean “Dino” Stevens was
    an alternative suspect or co-participant and prosecutorial
    misconduct in failing to disclose information about Dino.
    Clark also raises ten uncertified claims, six of which we
    grant a certificate of appealability (“COA”) and deny on the
    merits and three of which fail to satisfy the COA standard.
    Because Clark’s federal habeas petition was filed before
    April 24, 1996, the habeas standards in effect prior to the
    implementation of the Antiterrorism and Effective Death
    Penalty Act of 1996 (“AEDPA”) apply. Under pre-AEDPA
    standards, both questions of law and mixed questions of law
    and fact are subject to de novo review, which means that a
    federal habeas court owes no deference to a state court’s
    resolution of such legal questions (in contrast with post-
    AEDPA standards). See Williams v. Taylor, 
    529 U.S. 362
    ,
    400 (2000); see also Robinson v. Schriro, 
    595 F.3d 1086
    ,
    1099 (9th Cir. 2010). But the state court’s factual findings
    are entitled to a presumption of correctness unless one of the
    exceptions under 
    28 U.S.C. § 2254
    (d) (1991) is met.
    Clark’s numerous ineffective assistance of counsel
    claims, governed by Strickland v. Washington, 
    466 U.S. 668
    (1984), are unavailing because Clark does not show that trial
    counsel’s performance fell below an objective
    reasonableness standard at the time of the trial in 1987.
    Furthermore, for the few instances where counsel’s conduct
    was deficient, Clark has not shown that there is a reasonable
    probability that the outcome would have been different. His
    efforts to show prejudice are undercut by the extensive
    evidence presented at trial, including his two detailed
    confessions and the physical evidence confirming his
    involvement in the crimes. The post-conviction mitigating
    6                   CLARK V. CHAPPELL
    evidence Clark marshals to support his argument that the
    penalty phase would have been different is cumulative of the
    mitigating evidence presented at the guilt and penalty phases
    of trial. We similarly find unpersuasive Clark’s conflict of
    interest claim under Mickens v. Taylor, 
    535 U.S. 162
    , 171
    (2002), based on his first attorney’s election as District
    Attorney and his subsequent attorney’s representation of
    witnesses.
    On one issue, juror misconduct, we remand to the district
    court to decide Clark’s claim in light of our recent decision
    in Godoy v. Spearman, 
    861 F.3d 956
     (9th Cir. 2017) (en
    banc).
    We otherwise deny habeas relief. We also affirm the
    district court’s denial of evidentiary hearings for all claims
    (with the exception of the juror misconduct issue),
    concluding Clark has not shown that he would be entitled to
    relief on his proffered facts.
    I. FACTUAL BACKGROUND
    A. The Crimes
    Around 4:00 a.m. on July 19, 1985, fifteen-year-old
    Rosie Grover arrived at the Greyhound bus depot in Ukiah,
    California. After unsuccessfully attempting to obtain a ride,
    she started walking to her mother’s house. Several hours
    later, her body was found in a nearby creek-bed. Grover had
    been raped, stabbed with a sharpened screwdriver, and
    bludgeoned in the head and neck with two concrete blocks.
    At the time of the crimes, Defendant-Appellant Richard
    Dean Clark, then twenty-one years old, was living with and
    caring for his paraplegic friend, David Smith, in Ukiah. On
    the day before the crimes, Clark and Smith spent the
    CLARK V. CHAPPELL                       7
    afternoon drinking beer, ingesting cocaine, and smoking
    marijuana. Clark drank three or four beers at the local bar.
    Clark and Smith both ingested cocaine at the house of
    Smith’s stepsister, Michelle Stevens. Although Smith had
    seen Clark use methamphetamine in the past, he did not see
    Clark use methamphetamine that day. Clark smoked
    between two and five marijuana cigarettes.
    Later that evening, a fight broke out between Clark and
    Michelle’s boyfriend, Matt Williams.          According to
    Williams, Clark “looked like he was on something” and “got
    kind of violent, shadow boxing around the house and
    throwing punches.” Around 10:00 p.m., Clark announced
    that he “was going to beat somebody up and rob them” and
    then he left with Dino Stevens—Michelle’s stepbrother.
    Clark and Dino played pool at Munchie’s, a local pool
    hall, for approximately 30 to 40 minutes. After they left the
    pool hall, they went to the home of Robyn Boyd, who lived
    near the Ukiah bus depot. Clark and Dino left Boyd’s house
    around 12:30 a.m. Upon leaving, the men went their
    separate ways.
    Little evidence, other than Clark’s statements to the
    police, establish Clark’s location and movements from the
    time that he left Boyd’s house until he entered a restaurant
    later that morning.
    On July 19 at about 6:15 a.m., Clark walked into Ron-
    Dee-Voo Restaurant near the Greyhound bus depot with a
    partially empty wine cooler bottle in his hand. He told Karen
    Mertle, a waitress, that he found a girl’s body in a nearby
    ditch who was hurt “real bad” and “maybe raped.” He
    handed Mertle the wine cooler bottle, which she saved to
    give to the police. Mertle testified that Clark did not appear
    8                   CLARK V. CHAPPELL
    intoxicated. Several witnesses from the restaurant testified
    that Clark did not appear intoxicated or upset.
    Officer Wayne McBride of the Ukiah Police Department
    arrived at the restaurant at around 6:34 a.m. Clark told
    Officer McBride that he found the body when he was taking
    a “shortcut” to buy cigarettes at a convenience store and that
    he checked the body for a pulse and may have touched the
    suitcase found near the body. Officer McBride testified that
    Clark was wearing sunglasses and spoke rapidly but did not
    appear to be intoxicated and did not smell of alcohol.
    Detectives Fred Kelley and Edward Gall collected
    physical evidence at the crime scene. Grover’s body was
    partially clothed with her jeans buttoned, a cloth belt undone,
    her jacket and blouse open exposing her bra, and her shoes
    and tank-top lying on the ground nearby. Her duffle bag and
    suitcase were about ten feet away from her body, and inside
    her duffle bag was the same brand and flavor of wine coolers
    as the bottle Clark had given to Mertle. Two bloody concrete
    blocks—the heavier of the two weighing about
    18.5 pounds—were found near Grover’s body with traces of
    human blood and hair, consistent with Grover’s.
    After searching the crime scene, Detectives Kelley and
    Gall went to Michelle’s house, where Clark and Smith were
    residing at the time, and received Smith’s permission to
    search Smith’s car. Detective Kelley found a pair of Levi’s
    jeans and a vest-jacket on the rear seat with blood splattered
    on the jeans and smeared on the vest. Smith and Michelle
    identified the clothing as having been worn by Clark the
    previous evening. The blood was found to be consistent with
    both Grover’s and Clark’s blood.
    One week later, a hand-sharpened screwdriver with
    traces of human blood was found in Smith’s car. On the
    CLARK V. CHAPPELL                         9
    shoes Clark wore when he was arrested, there was splattered
    human blood and a hair that was found to be consistent with
    Grover’s hair and inconsistent with Clark’s hair. Clark
    “could not be ruled out” as the source of the semen found in
    the victim’s underwear, and the pubic hair found in the
    victim’s underwear was consistent with Clark’s.
    B. Clark’s Confessions
    Clark gave three custodial statements to the police on the
    day of his arrest. First, at the police station and prior to his
    arrest, Clark waived his Miranda rights and spoke to
    Detectives Kelley and Gall, essentially repeating the same
    story he told Officer McBride earlier in the morning at the
    restaurant.
    Second, after Clark’s arrest and booking, Detectives
    Kelley and Gall transported Clark to the hospital to obtain a
    sample of Clark’s blood. During the drive, Clark confessed
    to killing Grover. During the drive, Clark suddenly asked,
    “What can someone get for something like this, thirty
    years?” Detective Gall testified at trial that he had
    responded: “Probably not unless you were a mass murderer.”
    Fifteen to twenty-five seconds following this exchange
    Clark said, “I want this on the record. I’m guilty. I killed
    her. What do you want to know?” Clark told the officers
    that he was walking southbound on State Street when he met
    Grover. Clark told the officers that Grover “started to come
    on to him.” The officer recalled that Clark said that Grover
    “flashed” her breast at him. Clark said that he and Grover
    had consensual sexual intercourse, but that afterward Grover
    threatened “that she was going to cry rape.” Clark said that
    he thought that he would probably receive a less severe
    penalty for killing her than raping her and so then began to
    choke her. Clark said he found “what appeared to be a
    screwdriver, just the metal shaft part, . . . in the creekbed and
    10                  CLARK V. CHAPPELL
    he said he stabbed [Grover] several times,” and “took a large
    piece of cement and hit [Grover] in the head with it.” Clark
    told the officers that he then went back to Michelle’s house
    and changed his clothing. Clark left a pair of Levi’s jeans
    and his jacket in the back of Smith’s car. Clark told the
    officers that he then returned to the crime scene because he
    thought that if he reported finding the body, no one would
    suspect that he killed Grover. In this confession, Clark did
    not mention blacking out during the crimes.
    Third, upon returning to the police station, Clark waived
    his constitutional rights and agreed to provide a tape-
    recorded statement to Detectives Kelley and Gall and
    Deputy District Attorney Al Kubanis. The recorded
    statement differed somewhat from the statement Clark gave
    in the patrol car. In the recorded statement, Clark explained
    that during the prior evening he had ingested eight or nine
    beers, several tablets of Valium, one-eighth gram of
    methamphetamine, and several marijuana cigarettes, and
    that he had “blacked out” during the course of the crimes.
    During this confession, Clark repeated that he was walking
    southbound on State Street when he met Grover. Clark said
    that “the next thing [he] kn[e]w [Grover had] her top off.”
    Clark again admitted to having sexual intercourse with
    Grover and claimed it was consensual. Clark said that,
    following the encounter, Grover “said she was going to cry
    rape” and “to put [him] in jail for 20, 30 years.” Clark stated
    that then he “grabbed her by the neck” and “started choking
    her.” In the recorded statement, unlike in the patrol car
    confession, Clark claimed he blacked out, and the next thing
    he remembered was that he was “bashing [a] rock” into
    Grover. Clark told the police that he believed he hit Grover
    in the head with the rock. Clark said that he “remember[ed]
    throwing a piece of metal” that “looked like an old broken
    screwdriver or something” but that he did not remember
    CLARK V. CHAPPELL                     11
    stabbing Grover. When questioned about his earlier
    statement in the patrol car in which he said he had stabbed
    Grover, Clark said that was simply his assumption based on
    the officers telling him that she had stab wounds. The taped
    statement lasted about 35 minutes.
    II. JUDICIAL PROCEEDINGS
    A. Pre-Trial Issues
    Clark was arraigned on July 23, 1985, in Ukiah. Clark
    entered a not guilty plea. Although the crimes occurred in
    Mendocino County, the state court granted Clark’s motion
    to change venue to Santa Clara County for the trial.
    1. Representation
    At the arraignment, the Mendocino County Public
    Defender Susan Massini was appointed to represent Clark.
    In September 1985, Joseph Allen, an experienced capital
    defense attorney, became co-counsel at Massini’s request
    due to her inexperience with capital cases. Massini and
    Allen jointly represented Clark through June 1986.
    In January 1986, Massini decided to run for Mendocino
    County District Attorney. On February 7, 1986, there was a
    pre-trial conference regarding the trial date. The deputy
    district attorney wanted the trial date set before June 1986
    because he was worried that Massini might be elected
    District Attorney and present conflict of interest problems.
    Massini and Allen objected, doubting that such problems
    would arise. However, Massini was elected as the District
    Attorney in June 1986 and took office in January 1987.
    After the election, Allen moved to recuse the District
    Attorney’s Office from prosecuting Clark’s case. The court
    granted the motion, and the Attorney General was
    12                  CLARK V. CHAPPELL
    substituted as prosecutor. When Massini relinquished the
    position of Mendocino County Public Defender, Ronald
    Brown was promoted to that position and became co-counsel
    with Allen. Brown or his office had previously represented
    prosecution witnesses Robyn Boyd, David Smith, Dino
    Stevens, and Matt Williams in unrelated matters.
    2. Psychiatric Evaluation
    In late July 1985, Massini retained Dr. Peter Mayland, a
    practicing psychiatrist with a specialty in forensic
    psychiatry, as a mental health consultant to evaluate both
    Clark’s competency to stand trial and the possibility of a
    mental-health-related defense or mitigation at trial.
    Dr. Mayland first met with Clark at the Mendocino County
    Jail several days after Clark was arrested. Dr. Mayland
    recommended that Massini consult with his former
    colleague Dr. Rex Beaber to assess whether Clark had an
    impairment that might provide the basis of a viable mental
    defense.
    Clark met with Dr. Beaber on November 23 and 24,
    1985. Dr. Beaber concluded that he probably could not be
    of assistance to the defense from a guilt standpoint. Massini
    requested that Dr. Beaber write a letter to summarize his
    findings.     According to Dr. Mayland’s declaration,
    Dr. Beaber thought it might be best if he did not write a
    report of any sort, but Massini insisted that he generate a
    report that detailed his findings. In response to Massini’s
    request, Dr. Beaber drafted a one-page letter detailing his
    findings. The letter indicates that “Clark does not appear to
    suffer from any organic brain dysfunction, psychosis,
    schizophrenia, or affective disorder.”          According to
    Dr. Beaber, Clark did not evince any disorder that would
    impair his capacity to form the requisite intent for the crimes
    charged. Instead, Dr. Beaber’s letter indicates that Clark’s
    CLARK V. CHAPPELL                      13
    “‘amnesia’ appears to be typical psychogenic post-homicide
    amnesia [that] is not, in itself, demonstrative of any
    particular disability regarding the usual mens rea issues.”
    Dr. Beaber’s letter concludes that Clark suffers from “a
    sociopathic personality disorder” and exhibits characteristics
    of a “sexual psychopath,” which resulted from “severe
    maternal deprivations throughout his childhood.” Allen,
    who became co-counsel after Massini received Dr. Beaber’s
    letter, was unaware of the nature of Dr. Beaber’s letter.
    3. Plea Offer
    At some point before the pre-trial suppression hearing,
    the state offered Clark a deal to plead guilty to first-degree
    murder with a sentence of life without parole. Dr. Mayland
    and Brown thought taking the plea deal was the best option,
    but Allen disagreed. Allen thought there was a good chance
    he could get a life sentence or even a second-degree verdict.
    Allen also thought that he could potentially get Clark’s
    statements to the police suppressed at the suppression
    hearing, but the state declined to leave the deal open through
    the litigation of the suppression issues. Allen informed
    Clark “that the only choice he had was life without parole or
    a trial.” Clark ultimately “decided to go to trial.”
    4. The Pre-Trial Suppression Hearing
    On October 20, 1986, the court conducted a lengthy
    hearing on Clark’s motion to suppress his confessions. The
    hearing included both documentary and testimonial
    evidence.
    Dr. Mayland testified for the defense. By that time,
    Dr. Mayland had met with Clark regularly and developed a
    therapeutic relationship with him. Although Dr. Mayland
    regularly discussed the case with Allen, Allen did not know
    14                  CLARK V. CHAPPELL
    that Dr. Mayland had talked to Clark about the facts of the
    crimes beyond Dr. Mayland’s initial interview with Clark.
    Dr. Mayland testified that, based upon psychological
    factors arising from Clark’s childhood, lifestyle, and drug
    use, he possessed “serious doubt” regarding whether Clark
    could have understood and intelligently waived his Miranda
    rights on July 19, 1985. During cross-examination, the
    prosecution asked Dr. Mayland what Clark told him about
    the crimes. Dr. Mayland testified that Clark told him details
    about the crimes on two separate occasions—first, in the
    initial interview at the Mendocino County Jail several days
    after Clark’s arrest, and second, in a meeting about a month
    after that initial interview. Dr. Mayland reviewed his notes
    and read them at the suppression hearing.
    In Clark’s first account to Dr. Mayland, Clark told
    Dr. Mayland that he met Grover, that Grover performed oral
    sex on Clark, and that Grover and Clark had consensual
    sexual intercourse. According to Dr. Mayland’s notes, Clark
    told Dr. Mayland that Grover said, “If I don’t get pregnant,
    I won’t cry rape.” Clark then stated, “If you cry rape, this is
    what’s going to happen to you,” and he then “put [his] hands
    on her neck.” Then, Clark stated he “blacked out.” Clark
    woke up to Grover “all bloody” and got “scared.” He then
    “ran back to the car, [and] changed his pants and jacket” at
    Michelle’s house.
    In Clark’s second account to Dr. Mayland, Clark stated
    that he grabbed Grover and pulled her behind a building and
    demanded of Grover, “Why don’t you show me some tit,
    bitch” and “suck my dick” (referred to herein as the “lewd
    statements”). Grover asked him what he wanted, and Clark
    pointed to his genital area. Grover said that she would give
    Clark one hundred dollars to come to her home. Clark said
    no because Grover would just turn him in. Clark told Grover
    CLARK V. CHAPPELL                       15
    to take off her clothes. Clark said that Grover was scared
    and that Clark acted “mean.” Grover said to Clark, “Please
    don’t hurt me. I’ll do anything you want.” Clark then had
    sexual intercourse with Grover. Afterwards, Clark asked if
    Grover was “going to cry rape.” Clark said, “If you say
    anything, . . . this is what’s going to happen to you if you cry
    rape.” Then, Clark began to choke Grover. According to
    Dr. Mayland’s notes, Clark stated: “I was scared she was
    going to suffer, so I— . . . I didn’t mean to. I lost control.
    She was still jittering. I stabbed her. I was trying to get it
    over. I figured I already killed her and didn’t want her to
    suffer. She totally stopped moving. I ran. Went back to the
    car and changed clothes.”
    The state court ruled that the prosecutor could use at trial
    Clark’s statements to Dr. Mayland to impeach Clark’s
    experts, that “tendering of the psychiatric defense” waived
    any Fifth and Sixth Amendment privileges, and that Clark
    waived the statutory attorney-client and psychotherapist-
    patient privileges.
    Allen and Brown both thought that the trial judge had
    assured them that Dr. Mayland’s testimony at the pre-trial
    suppression hearing would not be admissible at trial for any
    purpose. According to counsel, this agreement occurred in
    an unreported in-chambers conference during the
    suppression hearing. Clark was not present during this
    conference. Defense Investigator Howard McPherson also
    understood that the trial judge had assured Allen that
    Dr. Mayland’s testimony would not be admissible at trial for
    any purpose. The trial judge later stated that he did not recall
    any such discussion in chambers.
    16                  CLARK V. CHAPPELL
    B. The Trial
    Voir dire on the case started on October 20, 1986, and
    the presentation of evidence began on March 9, 1987.
    1. The Guilt Phase
    a. The Prosecution’s Case at the Guilt Phase
    At trial, the prosecution called experts to testify to the
    gruesome nature of the crimes. The prosecution also
    introduced evidence regarding Clark’s confessions by
    calling the detectives to testify regarding Clark’s confession
    in the patrol car and playing the recording of Clark’s taped
    confession at the police station.
    The autopsy confirmed that Grover was raped, stabbed,
    and beaten. The autopsy was performed under the direction
    of Dr. Boyd Stephens, who testified at trial. Dr. Stephens
    opined that the lacerations to Grover’s vaginal area were
    consistent with nonconsensual sexual intercourse, and sperm
    was found inside and outside her vagina. Dr. Stephens could
    not make a conclusive finding on whether sodomy had
    occurred. No trauma to the anal opening was observed, but
    a “rare” sperm was found in the anus.
    Dr. Stephens testified that, although two of the ten stab
    wounds penetrated Grover’s heart and lungs and could have
    independently killed her, the actual cause of death was blunt
    trauma to the head and neck. Dr. Stephens could not
    determine how many blows had been struck, but nineteen
    separate areas of blunt trauma were visible. Grover’s face
    was bludgeoned so extensively that her facial structure was
    collapsed and her brain tissue exuded through her skull
    fractures. There was no conclusive evidence of attempted
    strangulation, in large part because the blunt trauma injuries
    CLARK V. CHAPPELL                      17
    were so extensive that they obscured any signs of
    strangulation that would have normally been present.
    A criminalist testified about tests performed on the
    physical evidence. Analysis of the blood splatters on Clark’s
    jeans revealed enzymes consistent with both Clark’s and
    Grover’s blood. A hair found on one of Clark’s shoes was
    consistent with Grover’s hair. Clark could not be ruled out
    as the source of semen. The concrete blocks had traces of
    blood and hair consistent with Grover’s. The sharpened
    screwdriver found in Smith’s car approximately a week after
    the murder bore traces of human blood.
    The prosecution’s strategy to fight Clark’s theory of
    “rage reaction” was, during cross-examination of the defense
    witnesses, to rely on Dr. Mayland’s second account of
    meeting with Clark, including the two lewd statements. The
    prosecution used the testimony to compel the defense
    experts to admit that Clark’s actions were goal-oriented, and
    thus is inconsistent with a rage reaction.
    b. The Defense’s Case at the Guilt Phase
    Clark did not dispute at trial that he killed Grover, but
    instead, the defense strategy at trial was to argue Clark
    lacked the intent to kill her. The defense asserted that Clark
    had emotional difficulties and chronic drug use that resulted
    in a “rage reaction” during the crimes. Defense counsel
    argued that “a person who goes into a rage [reaction] is not
    acting with intent.”
    The defense’s case centered around disputing that Clark
    was able to form the requisite state of mind to kill based on
    his emotional difficulties, severe depression, and chronic
    drug use that culminated in a “rage reaction” on the night of
    the murder. The defense called several witnesses to testify
    18                  CLARK V. CHAPPELL
    that Clark used drugs from an early age and regularly
    ingested alcohol, marijuana, and methamphetamine.
    Witnesses also testified that Clark was severely depressed,
    attempted suicide in February 1985, and increased his drug
    usage following the suicide attempt.
    Clark also called numerous expert witnesses during the
    guilt phase to support the rage reaction theory. These
    included Dr. Randall Baselt, a forensic toxicologist, who
    testified regarding his analysis of the blood sample taken
    from Clark shortly after arrest. Dr. Baselt testified to traces
    of marijuana and Valium in Clark’s blood.
    Dr. Ronald Roberts, a clinical psychologist for the
    defense, conducted testing on Clark to determine his then-
    current psychological functioning and whether he suffered
    from any neuropsychological deficits. Dr. Roberts testified
    about his test results. The prosecution cross-examined
    Dr. Roberts by using the two lewd statements in Clark’s
    second account to Dr. Mayland. Dr. Roberts testified that
    Clark had not mentioned making those statements to Grover,
    but had told Dr. Roberts that Grover tried to talk Clark out
    of forcing her to have sex.
    Dr. David Smith, the medical director of the Haight
    Ashbury Free Medical Clinic, testified extensively about the
    effects of methamphetamine abuse and the phenomenon of
    a “rage reaction.” He also testified that the extent of
    debilitative drug effect cannot be determined by the level of
    methamphetamine in the blood, because the effect of
    dosages taken over time is cumulative.            On direct
    examination, Dr. Smith testified that “[a] rational, goal-
    oriented reaction to the sensory stimulus” was less likely to
    reflect impairment or a so-called rage reaction.
    CLARK V. CHAPPELL                       19
    On cross-examination, the prosecution attempted to
    show that Clark was engaging in goal-oriented behavior and
    thus not having a rage reaction. The prosecution relied on
    testimony in the record and Dr. Mayland’s second account
    to create a hypothetical “goal.” The prosecution asked Smith
    to consider this hypothetical: “Assume that at about
    11:00 p.m. at night a man says to certain acquaintances of
    his I’m going to go out and steal something and I’m going to
    screw somebody up or beat somebody up.” Dr. Smith agreed
    that this was a “rational goal-oriented statement.” The
    prosecution then asked if a series of hypothetical actions,
    such as stealing a battery, obtaining a sharpened screwdriver,
    and grabbing a woman and pulling her behind a building,
    were consistent with this hypothetical 11:00 p.m. goal-
    oriented statement. Dr. Smith agreed they were.
    The prosecution then asked about the two lewd
    statements that Dr. Mayland testified about: Clark’s
    statements to Dr. Mayland that he demanded of Grover
    “Why don’t you show me some tit, bitch” and “suck my
    dick.” The prosecution asked if these statements were
    consistent with the goal reflected in the hypothetical. Based
    on the defense’s objection and after the judge’s sidebar with
    counsel outside the presence of the jury, the judge ultimately
    concluded that both lewd statements could be used as
    hypotheticals in the cross-examination of Dr. Smith. The
    judge admonished the jury that it could not consider the
    statements for their truth, but “only as it may assist you in
    understanding the opinion of this expert now on the stand.”
    Dr. Smith agreed that both lewd statements were consistent
    with the goal reflected in the hypothetical. The prosecution
    also asked if, assuming hypothetically, some of the other
    details of Clark’s statements, including removing Grover’s
    clothing, reacting to her threat of reporting him for rape, and
    20                   CLARK V. CHAPPELL
    killing Grover, were consistent with goal-oriented behavior.
    Dr. Smith agreed that they were.
    Dr. Stephen Raffle, a psychiatrist for the defense,
    testified regarding Clark’s mental condition at the time of the
    murder. Dr. Raffle testified that Clark had suffered a rage
    reaction, and Dr. Raffle diagnosed Clark with a borderline
    personality disorder. The prosecution asked Dr. Raffle
    whether Clark admitted to Dr. Raffle that the sexual
    intercourse was forced, and Dr. Raffle said yes. During the
    cross-examination of Dr. Raffle, Dr. Raffle agreed that Clark
    had been lying at some points in his rendition of the story.
    Dr. Raffle also agreed during cross-examination that Clark
    could be psychopathic and brilliant, rather than having a rage
    reaction, based on his lying.
    Later in Dr. Raffle’s testimony, the prosecution asked
    Dr. Raffle to assume the truth of all of the details of
    Dr. Mayland’s testimony regarding Clark’s second account.
    After the prosecution went through Dr. Mayland’s
    testimony, the prosecution asked Dr. Raffle whether he
    believed Clark’s statements about his remorse were genuine.
    Dr. Raffle testified that he believed they reflected true
    remorse at the time.
    The prosecution also asked Dr. Raffle about Dr. Beaber’s
    letter. Dr. Raffle responded: “It does not give me any of his
    clinical data, nor do I have available to me any of his clinical
    data for analysis.”
    c. The Verdict
    On June 22, 1987, the jury convicted Clark of first-
    degree murder and rape under California Penal Code § 187
    and § 261(2). The jury also found true the special
    circumstance allegations: (a) that Clark committed the
    CLARK V. CHAPPELL                        21
    murder during the course of the rape under
    § 190.2(a)(17)(iii); (b) that he inflicted bodily injury with the
    intent to do so under § 1203.075(a)(1); and (c) that he used
    a deadly weapon (a screwdriver) in the commission of the
    murder under § 12022(b).
    2. The Penalty Phase
    a. The Prosecution’s Case at the Penalty Phase
    Relying on the circumstances of the murder, the
    prosecution presented no aggravating evidence during the
    penalty phase.
    b. The Defense’s Case at the Penalty Phase
    The defense presented the testimony of 23 witnesses in
    mitigation, including Clark’s family members, friends,
    scoutmasters, a teacher, and a mental health counselor. The
    mitigating evidence focused on Clark’s deteriorated family
    situation, Clark’s father’s death, and Clark’s drug use and
    mental health problems. The California Supreme Court’s
    decision on direct appeal provides a recitation of Clark’s life
    history presented by the defense at the penalty phase:
    Defendant was the eldest child of Diane
    and Paul Dean Clark and the brother of
    Robert and Annette.          Although some
    testimony indicated that defendant’s father
    drank and was abusive, defendant’s family
    life was relatively stable until his parents’
    separation and his father’s subsequent death.
    While his parents were together, defendant
    was active in the Boy Scouts and his parents
    served as scoutmasters. Several witnesses
    remembered defendant as an “excellent” or
    22               CLARK V. CHAPPELL
    “good” scout, who interacted well with his
    peers.
    Numerous witnesses recounted how
    defendant’s family situation deteriorated
    dramatically after his parents’ separation,
    which occurred when defendant was about
    10 years old. Defendant’s mother worked
    menial jobs, often at night. The children were
    generally left unsupervised. Defendant’s
    mother developed a drinking problem. After
    her shift, she would not go home to the
    children, but instead would stop to have a few
    drinks at the local tavern. Defendant’s
    mother failed to provide a sanitary home or
    nutritious food for the children. Extensive
    testimony described the filthy conditions of
    the home. Defendant tried to care for his
    younger sister in his mother’s absence and to
    subdue the aggressive behavior of his
    brother.
    After his father’s death, which was
    followed closely by the deaths of both his
    paternal and maternal grandfathers, witnesses
    noticed a change in defendant’s behavior.
    Defendant became chronically depressed and
    stayed withdrawn in his room for extended
    periods of time.
    About this time, defendant and his
    brother began to drink and use drugs. Their
    house became the neighborhood “party
    house” and was akin to a “riot area.” There
    was conflicting testimony regarding whether
    defendant would ingest intoxicants when he
    CLARK V. CHAPPELL                   23
    was caring for his sister. Several of the
    friends who frequented the defendant’s house
    testified that he was not “the violent type”
    and frequently broke up physical fights.
    During this period of time, defendant and
    his siblings would occasionally visit a ranch
    owned by his maternal grandmother. His
    grandmother and other relatives remembered
    defendant as a hard worker who volunteered
    to do tasks at the ranch.
    Defendant and his family received
    counseling from the fall of 1980 through
    March of 1983.          The counseling was
    precipitated by a fight between defendant and
    his brother. The counselor found defendant
    to be depressed and frustrated in school due
    to a reading problem. Defendant was
    cooperative during counseling and seemed to
    care for his family.
    Eventually defendant was removed from
    his mother’s custody and placed in a foster
    home.      He apparently thrived in the
    structured environment. Defendant had a
    “beautiful” relationship with the other
    children in the home.          However, he
    occasionally drank beer and smoked
    marijuana with his foster mother’s son.
    While living at the foster home, defendant
    was enrolled in a special education program,
    which began to address his significant
    reading deficiency as well as his emotional
    problems. Defendant was a responsible
    student and did well in his classes. He was
    24                CLARK V. CHAPPELL
    popular and would defend other children. He
    continued to have a problem with drug usage
    during the school day, which his teacher
    attributed to a need to escape the pain and
    anger he felt about his mother and brother.
    When defendant graduated from high
    school, he was forced to leave his foster
    home. He worked at the Aloha Saw and
    Mower Shop. The owner remembered him as
    a reliable worker with a good attitude. He
    lived for a time with Keith Michalek. Both
    Keith and his father recalled defendant as a
    good, trustworthy person, who was never
    “rowdy.” While he was living with Keith, he
    drank beer and smoked marijuana
    occasionally, but did not use “hard” drugs.
    Defendant’s mother convinced defendant
    to quit his job and come live with her in
    Anderson. His mother later moved to Oregon
    without him. Prior to his mother’s move,
    defendant tried to commit suicide, apparently
    as the result of a failed romantic relationship.
    While he was living in Anderson,
    defendant began to care for Smith. Robert
    Clark testified that Smith was a heroin addict.
    About three months before the murder,
    defendant injected methamphetamine for the
    first time.
    Numerous witnesses testified that they
    could not believe that defendant had
    committed the crimes for which he was
    convicted.
    CLARK V. CHAPPELL                      25
    Finally, the jury heard that while he was
    awaiting his trial, defendant continued his
    attempt to overcome his reading deficiency
    by working with a counselor from the
    Mendocino County Adult Literacy Program.
    People v. Clark, 
    857 P.2d 1099
    , 1145–46 (Cal. 1993).
    c. The Penalty
    On August 14, 1987, the jury imposed the death penalty
    upon Clark. On direct appeal, the California Supreme Court
    issued a reasoned decision on August 30, 1993, affirming
    Clark’s conviction and sentence. Clark, 
    857 P.2d at 1110
    .
    In its decision, the court rejected Clark’s claims of conflict
    of interest (uncertified Claims 5 and 6). 
    Id.
     at 1130–32. On
    June 30, 1994, the United States Supreme Court denied his
    petition for writ of certiorari. Clark v. California, 
    512 U.S. 1253
     (1994).
    C. Post-Conviction
    1. Post-Conviction Issues
    a. Manda Report
    On July 19, 1985 (the day of the murder), Deputy Glenn
    Manda of the Mendocino County Sheriff’s office prepared a
    coroner’s report (the “Manda Report”). Post-conviction,
    Clark contends that this is exculpatory evidence that was
    withheld by the prosecution during trial.
    According to the report, which states it was filled out at
    11:00 a.m., Deputy Manda conducted an autopsy at the
    mortuary, which revealed puncture wounds on Grover’s
    upper back near the spine. The report also states that Deputy
    26                  CLARK V. CHAPPELL
    Manda notified the Ukiah Police Department, and Detective
    Gall arrived at the mortuary to take photos of the body.
    b. Jailhouse Report
    On October 17, 1985, one of the guards at Mendocino
    County Jail wrote an “Inmate Safety Report,” expressing
    concern for Clark’s safety. The report states that “[i]nmates
    in [the] exercise yard hinted that Richard Clark may be
    assaulted tonight.” The report further relayed that inmates
    Barella, Hull, Brackett, and Strobridge “stated that Clark
    might not make it through the night” and “he should be
    moved or else he would be assaulted due to Clark’s cocky
    attitude and lack of remorse.” The report commented that
    “[t]he inmates would not be specific, but felt we should be
    warned.” The reporting guard advised his supervisor of the
    situation, and “Clark [was] moved to Isolation for his own
    protection.”
    The jailhouse report was admitted into evidence during
    trial. The state asked Dr. Raffle questions about the report
    during cross-examination in an effort to impeach
    Dr. Raffle’s opinion that Clark was remorseful about his
    crimes. The only objection to this line of questioning was
    that the defendant had not received a copy of the report.
    During post-conviction proceedings, the defense
    obtained declarations of two of the inmates named in the
    report. In his 1998 declaration, Inmate Robert Brackett
    stated: he was then in custody with Clark; he was at that time
    represented by Public Defender Brown; Clark “never said or
    did anything that indicated lack of remorse”; and Clark “did
    not act cocky or proud in any way.” In his 1998 declaration,
    Inmate John Strobridge stated: Clark never said or did
    anything or acted in any way that showed a lack of remorse;
    Strobridge never thought that Clark was cocky; Clark never
    CLARK V. CHAPPELL                       27
    bragged about the crimes; and Clark once said: “I was so out
    of my mind on drugs. I wish it never happened.”
    c. Juror Communication with a Minister
    In 1996, about nine years after Clark’s conviction, one
    of the jurors, Frederick Barnes, declared that during the trial
    he had consulted with a minister about the death penalty.
    Specifically, Juror Barnes declared:
    During the guilt phase of the trial, it became
    clear that the special circumstances would be
    found to be true and that there would be a
    penalty phase. I consulted with a minister
    about the propriety of imposing the death
    penalty. I explained to him my role in the
    trial and the facts of the case. He told me that
    in these circumstances the death sentence
    would be appropriate because the Bible says,
    “an eye for an eye.” The minister’s advice
    was useful. I had long believed that anyone
    who is guilty of murder and convicted with a
    special circumstance should be given the
    death penalty.
    At oral argument in this appeal on April 16, 2019, the
    state’s attorney presented for the first time on appeal a
    declaration by Investigator Randall Wong, dated September
    3, 1997. The state’s attorney conceded at oral argument that
    the declaration was not in the excerpts of record.
    Subsequently, the state added the declaration as a
    28                      CLARK V. CHAPPELL
    supplement to the excerpts of record. 1 Investigator Wong
    stated in his declaration:
    On August 4, 1997, Mr. Kaster and I
    interviewed Mr. Barnes at his residence in
    San Jose, California. Mr. Barnes was asked
    about that part of his declaration which states
    that he consulted with a minister during the
    guilt phase. The declaration states that Mr.
    Barnes explained to the minister his “role in
    the trial and the facts of the case.”
    Mr. Barnes told Mr. Kaster and myself
    that he had asked the minister how the
    minister felt about the death penalty issue.
    The minister replied that the Bible says “an
    eye for an eye” and said he did not question
    the death penalty. Mr. Barnes also said that
    the minister’s statement did not settle the
    issue; the evidence in the case was the main
    thing that made Mr. Barnes decide on the
    death penalty.
    1
    In 1997, the state hired Investigator Randall Wong to interview
    Juror Barnes to obtain more information regarding the alleged
    conversation between Barnes and his minister. Investigator Wong
    prepared a declaration describing the results of the interview. According
    to the district court, the state put this declaration into evidence during
    Clark’s state habeas proceeding. Three years later, the state sought to
    introduce the declaration in the federal proceedings (over Clark’s
    objections) in support of its motion for summary judgment. The district
    court did not rule on Clark’s objections, but instead expressly declined
    to consider Wong’s declaration when it ruled on the summary judgment
    motion. The district court did not mention the Wong declaration in its
    April 2014 order.
    CLARK V. CHAPPELL                       29
    Mr. Barnes told us that he had not
    discussed the evidence from the trial with his
    minister.     When the declaration was
    presented to him by Clark’s agents he had
    missed that part which refers to “the facts of
    the case.” Also, Mr. Barnes said that the talk
    with the minister came not during the guilt
    phase but around the time the penalty phase
    was starting or about to start.
    2. Post-Conviction Proceedings
    a. State Habeas Corpus Petitions
    Meanwhile, on February 18, 1993, Clark filed a state
    petition for writ of habeas corpus, which the California
    Supreme Court summarily denied on the merits on
    November 17, 1993. On May 1, 1997, Clark filed a second
    state habeas petition, which the California Supreme Court
    denied on August 13, 1998, finding several claims
    procedurally barred under California rules and also rejecting
    all the claims on the merits. In his first state petition, Clark
    raised the issues that have been designated in this federal
    proceeding as certified Issues 4, 5, and 6 and uncertified
    Claims 8, 11, and 36, and in his second state petition, Clark
    raised certified Issues 1, 2, and 3 and uncertified Claims 14F,
    14L, 15B, 18, and 20.
    b. Federal Habeas Corpus Petitions
    On April 19, 1995, Clark filed a federal petition for writ
    of habeas corpus in the Northern District of California under
    
    28 U.S.C. § 2254
    . After he filed an amended federal petition
    in July 1996, unexhausted claims were identified and Clark
    was granted leave to return to state court to file an amended
    30                     CLARK V. CHAPPELL
    state petition, and the federal proceedings were stayed
    pending exhaustion of state court remedies.
    When Clark returned to federal court, he filed another
    amended federal habeas petition in 1998. The state filed a
    combined answer to the amended petition and motion for
    summary judgment on all claims. Clark opposed the motion
    for summary judgment and filed a cross-motion for summary
    judgment. A hearing was conducted on the issues. On May
    8, 2000, the district court (Judge Ware) granted summary
    judgment in favor of the state on the vast majority of the
    claims. Judge Ware also found an evidentiary hearing to be
    necessary on Claim 19 (a shackling question, which is not
    raised on appeal). On June 5, 2000, the district court filed
    an order permitting Clark to file a request for an evidentiary
    hearing for claims that included the claims for which the
    district court had already granted summary judgment.
    Immediately after the court’s order, Clark filed a 400-
    page motion for evidentiary hearing.           After further
    extensions of time and briefings and after Clark filed another
    amended federal habeas petition in July 2005, the district
    court denied Clark’s motion for an evidentiary hearing
    without prejudice. From May 2006 through 2009, the
    proceedings were delayed further and the parties filed
    several status reports updating the court. 2
    On September 22, 2009, Clark filed his operative fifth
    amended federal habeas petition, alleging thirty-four claims
    for relief, including the six certified and ten uncertified
    2
    From May 2006 until May 2007, the proceedings were stayed to
    allow Clark time to investigate the accuracy of declarations before the
    court, which may have been falsified by investigator Kathleen Culhane,
    who had been charged with falsifying declarations and witness
    statements. Several declarations were later withdrawn.
    CLARK V. CHAPPELL                       31
    claims on appeal here. The state answered in May 2010, and
    the deadline for completing discovery was extended several
    times by request of both parties.
    On August 1, 2012, Clark filed a renewed motion for an
    evidentiary hearing. On September 5, 2012, the case was
    reassigned from Judge Ware to Judge Alsup. On April 1,
    2014, the district court denied Clark’s motion for renewed
    evidentiary hearing, his writ of habeas corpus as to all of his
    claims for relief, and his request for a COA. Final judgment
    issued, and this appeal followed.
    c. The Current Appeal
    On September 4, 2015, we granted in part Clark’s motion
    for COA on six claims. Clark raised the ten uncertified
    claims in his opening brief. The parties filed supplemental
    briefs first in response to our order to address uncertified
    Claims 5, 6, 11, 14L, 18, and 20 with particularized focuses
    directed by the court. Subsequently, the parties filed
    supplemental briefs in response to our order to address the
    impact, if any, of Godoy v. Spearman, 
    861 F.3d 956
     (9th Cir.
    2017) (en banc), and of Williams v. Filson, 
    908 F.3d 546
     (9th
    Cir. 2018). We have jurisdiction under 
    28 U.S.C. § 1294
    and § 2253.
    III.    STANDARD OF REVIEW
    AEDPA, which implemented changes to statutes
    governing federal habeas corpus petitions for state and
    federal prisoners, applies only to those cases that were filed
    after its effective date of April 24, 1996. Slack v. McDaniel,
    
    529 U.S. 473
    , 481–82 (2000); Lindh v. Murphy, 
    521 U.S. 320
    , 326–27 (1997). Where a petitioner files an amended
    petition, the filing date of the original petition is the
    controlling date for purposes of determining whether
    32                  CLARK V. CHAPPELL
    AEDPA applies. Thomas v. Chappell, 
    678 F.3d 1086
    , 1100–
    01 (9th Cir. 2012); Smith v. Mahoney, 
    611 F.3d 978
    , 994–95
    (9th Cir. 2010). Here, Clark filed his original petition in
    1995, before AEDPA’s effective date.           Pre-AEDPA
    standards thus govern his habeas petition.
    Under pre-AEDPA standards, both questions of law and
    mixed questions of law and fact are subject to de novo
    review, which means that a federal habeas court owes no
    deference to a state court’s resolution of such questions.
    Williams, 529 U.S. at 400; Garcia v. Bunnell, 
    33 F.3d 1193
    ,
    1195 (9th Cir. 1994) (reviewing conflict of interest claim in
    habeas petition as a mixed question of fact and law subject
    to de novo review). For factual findings under pre-AEDPA
    standards, the state court is entitled to a presumption of
    correctness unless one of the exceptions to 
    28 U.S.C. § 2254
    (d) (1991) is met, including, as relevant here:
    (1) that the merits of the factual dispute were
    not resolved in the State court hearing;
    (2) that the factfinding procedure employed
    by the State court was not adequate to afford
    a full and fair hearing; (3) that the material
    facts were not adequately developed at the
    State court hearing; . . . (6) that the applicant
    did not receive a full, fair, and adequate
    hearing in the State court proceeding; or
    (7) that the applicant was otherwise denied
    due process of law in the State court
    proceeding; (8) or unless that part of the
    record of the State court proceeding . . . is
    produced . . . and the Federal court on a
    consideration of such part of the record as a
    whole concludes that such factual
    CLARK V. CHAPPELL                      33
    determination is not fairly supported by the
    record . . . .
    Sumner v. Mata,      
    455 U.S. 591
    , 592 & n.1 (1982) (per
    curiam) (quoting      
    28 U.S.C. § 2254
    (d) (1991)). The
    petitioner carries   the burden to establish by convincing
    evidence that the    state court’s factual determination was
    erroneous. 
    Id.
    Dismissals based on state procedural default are
    reviewed de novo. See Robinson, 
    595 F.3d at 1099
    ; Griffin
    v. Johnson, 
    350 F.3d 956
    , 960 (9th Cir. 2003). When “a state
    prisoner has defaulted his federal claims in state court
    pursuant to an independent and adequate state procedural
    rule, federal habeas review of the claims is barred unless the
    prisoner can demonstrate cause for the default and actual
    prejudice as a result of the alleged violation of federal law,
    or demonstrate that failure to consider the claims will result
    in a fundamental miscarriage of justice.” Coleman v.
    Thompson, 
    501 U.S. 722
    , 750 (1991).
    Under pre-AEDPA standards, we review a district
    court’s denial of an evidentiary hearing for abuse of
    discretion. Baja v. Ducharme, 
    187 F.3d 1075
    , 1077 (9th Cir.
    1999).
    IV. DISCUSSION
    On appeal, Clark raises sixteen claims, of which six were
    certified: (1) ineffective assistance of counsel for failing to
    advise Clark to accept a plea offer; (2) violation of Clark’s
    rights to due process and an impartial jury by juror
    misconduct; (3) ineffective assistance of counsel for calling
    Dr. Mayland to testify at the pre-trial suppression hearing;
    (4) ineffective assistance of counsel in preparing and
    presenting expert testimony; (5) ineffective assistance of
    34                  CLARK V. CHAPPELL
    counsel for failing to investigate and present evidence of
    Clark’s fetal alcohol exposure, traumatic birth, and the
    ensuing effects on both; and (6) ineffective assistance of
    counsel for failure to argue that Dino Stevens was an
    alternative suspect or co-participant and prosecutorial
    misconduct in failing to disclose information about Dino.
    Clark also raises ten uncertified claims.
    A. Evidentiary Hearing
    Clark argues that the district court erred in denying his
    motion for an evidentiary hearing for all claims. The district
    court found that Clark had not “presented . . . colorable
    claim[s] of” relief and that all subsequently certified claims,
    as well as all of the uncertified claims could be “resolved on
    the record.” Furthermore, the district court reasoned that
    denial of an evidentiary hearing was warranted for Claim 36
    (cumulative error) because “none of the errors alleged in the
    fifth amended petition[] warrant relief.”
    Under pre-AEDPA standards, a petitioner is entitled to
    an evidentiary hearing if he can show: (1) the allegations, if
    proven, would entitle him to relief, and (2) the state court
    trier of fact had not reliably found the relevant facts after a
    full and fair hearing. See Townsend v. Sain, 
    372 U.S. 293
    ,
    312–13 (1963), overruled in part by Keeney v. Tamayo-
    Reyes, 
    504 U.S. 1
     (1992); see also Earp v. Ornoski, 
    431 F.3d 1158
    , 1167 (9th Cir. 2005). We have found that the first
    prong requires that a petitioner “establish[] a colorable claim
    for relief,” based on allegations of “specific facts which, if
    true, would entitle him to relief.” Earp, 431 F.3d at 1167 &
    n.4 (footnote omitted) (quoting Ortiz v. Stewart, 
    149 F.3d 923
    , 934 (9th Cir. 1998), overruling on other grounds
    recognized by Apelt v. Ryan, 
    878 F.3d 800
    , 827–28 (9th Cir.
    2017)). And, for the second prong, we have held that the
    CLARK V. CHAPPELL                      35
    petitioner must show that he “has never been afforded a state
    or federal hearing on this claim.” Id. at 1167.
    However, “[a]n evidentiary hearing is not required on
    allegations that are ‘conclusory and wholly devoid of
    specifics’” or “on issues that can be resolved by reference to
    the state court record.” Campbell v. Wood, 
    18 F.3d 662
    , 679
    (9th Cir. 1994) (en banc) (quoting Boehme v. Maxwell,
    
    423 F.2d 1056
    , 1058 (9th Cir. 1970)). Nor is an evidentiary
    hearing required if “there are no disputed facts and the claim
    presents a purely legal question.” Hendricks v.
    Vasquez, 
    974 F.2d 1099
    , 1103 (9th Cir. 1992).
    As subsequently explained, reference to the state court
    record resolves Issues 1, 3, 4, 5, and 6 and Claims 5, 6, 11,
    14L, and 20. See Campbell, 
    18 F.3d at 679
    . Clark’s Claims
    8, 14F, and 18 raise allegations that are conclusory and
    wholly devoid of specifics. See 
    id.
     Claim 15B, fails on the
    second prong of Townsend because Clark has already been
    “afforded a state . . . hearing on this claim.” Earp, 431 F.3d
    at 1167. Furthermore, even viewed cumulatively (Claim
    36), Clark has not shown that relief is warranted, and thus an
    evidentiary hearing is not needed to resolve this claim. See
    id. We therefore affirm the district court’s denial of an
    evidentiary hearing for all of these listed claims because
    Clark has not presented a colorable claim of relief. We
    reserve for the district court to determine on remand whether
    Issue 2 warrants an evidentiary hearing in light of Godoy v.
    Spearman, 
    861 F.3d 956
     (9th Cir. 2017) (en banc).
    36                  CLARK V. CHAPPELL
    B. Certified Claims
    1. Issue 1: We deny Clark’s claim that trial counsel
    was ineffective by advising him to reject the plea
    offer.
    Clark argues that trial counsel provided ineffective
    assistance of counsel because he recommended Clark reject
    the state’s plea offer for life without parole. Specifically,
    Clark argues that Allen’s recommendation constituted
    ineffective assistance because Allen gave unsound advice
    that Clark was likely to get second-degree murder.
    Claims of ineffective assistance of counsel are governed
    by Strickland, 
    466 U.S. 668
    . To prevail, the defendant’s
    burden is two-pronged. “First, the defendant must show that
    counsel’s performance was deficient.” 
    Id. at 687
    . “Second,
    the defendant must show that the deficient performance
    prejudiced the defense.” 
    Id.
     Even in a pre-AEDPA case,
    “[j]udicial scrutiny of counsel’s performance must be highly
    deferential.” 
    Id. at 689
    .
    To show deficient performance, the defendant must
    show that “counsel’s representation fell below an objective
    standard of reasonableness.” 
    Id. at 688
    . This requires
    “showing that counsel made errors so serious that counsel
    was not functioning as the ‘counsel’ guaranteed the
    defendant by the Sixth Amendment.” 
    Id. at 687
    . “A fair
    assessment of attorney performance requires that every
    effort be made to eliminate the distorting effects of
    hindsight, to reconstruct the circumstances of counsel’s
    challenged conduct, and to evaluate the conduct from
    counsel’s perspective at the time.” 
    Id. at 689
    . Thus, “a court
    must indulge a strong presumption that counsel’s conduct
    falls within the wide range of reasonable professional
    assistance.” 
    Id.
     “[T]he defendant must overcome the
    CLARK V. CHAPPELL                      37
    presumption that, under the circumstances, the challenged
    action ‘might be considered sound trial strategy.’” 
    Id.
    (quoting Michel v. Louisiana, 
    350 U.S. 91
    , 101 (1955)).
    The Supreme Court has extended the Sixth Amendment
    right to effective assistance of counsel to plea negotiations.
    Missouri v. Frye, 
    566 U.S. 134
    , 140 (2012); Lafler v.
    Cooper, 
    566 U.S. 156
    , 162 (2012). In Padilla v. Kentucky,
    where counsel failed to inform his client of the consequence
    of deportation from accepting a plea, the Supreme Court held
    that “a petitioner must convince the court that a decision to
    reject the plea bargain would have been rational under the
    circumstances.” 
    559 U.S. 356
    , 372 (2010). The defendant,
    though, has “the ultimate authority” to determine “whether
    to plead guilty.” Jones v. Barnes, 
    463 U.S. 745
    , 751 (1983).
    Counsel’s role, then, is to “both consult with the defendant
    and obtain consent to the recommended course of action.”
    Florida v. Nixon, 
    543 U.S. 175
    , 187 (2004). In other words,
    the “role of counsel” under the Sixth Amendment is to
    “advis[e] a client about a plea offer and an ensuing guilty
    plea” and to provide “legal aid and advice [to] help” a
    criminal defendant exercise his ultimate authority in making
    a decision. Frye, 
    566 U.S. at 140, 144
     (quoting Massiah v.
    United States, 
    377 U.S. 201
    , 204 (1964)).
    We need not reach Clark’s argument that Allen’s
    performance was constitutionally deficient. Even if Allen’s
    performance could have been construed as constitutionally
    deficient, Clark had the benefit of multiple attorneys. We
    read the Sixth Amendment “not [to] include the right to
    receive good advice from every lawyer a criminal defendant
    consults about his case.” United States v. Martini, 
    31 F.3d 781
    , 782 (9th Cir. 1994) (per curiam). We share the Sixth
    Circuit’s perspective that as the Sixth Amendment’s
    “recitations have been framed and phrased, they encompass
    38                  CLARK V. CHAPPELL
    an affirmative right (the right to effective assistance of
    counsel at critical proceedings), not a negative right (the
    right to be completely free from ineffective assistance).”
    Logan v. United States, 
    910 F.3d 864
    , 870 (6th Cir. 2018),
    cert. denied, 
    139 S. Ct. 1589
     (2019). When a “petitioner
    receive[s] both competent and deficient advice on whether
    to accept [a] plea offer . . . [s]uch conflicting advice
    undercuts [the petitioner]’s claim of ineffective assistance of
    counsel.” 
    Id.
     at 869–70.
    Clark not only received informative advice from Allen
    but also from his other attorney, Brown. As noted in Dr.
    Mayland’s 2005 declaration: “Mr. Brown and I tried very
    hard to get [Clark] to accept the plea offer.” Having been
    advised by both counsel, Clark ultimately “decided to go to
    trial.”     “[W]hen a defendant receives the necessary
    information to make a call, the fact that the ultimate decision
    is left to him does not render counsel absent or ineffective.”
    Id. at 871. Here, as Allen declared, “[t]here was a division
    in the defense camp” with Allen recommending trial and
    “Brown [thinking] the plea was the best option.” “Such
    conflicting advice undercuts [Clark]’s claim of ineffective
    assistance of counsel.” Id. at 870.
    Because Clark received adequate assistance at the plea-
    bargain stage, we conclude that he “received his Sixth
    Amendment right to effective assistance of counsel,
    regardless of [Allen’s and Brown’s] contradictory advice.”
    Id. We deny relief on Issue 1.
    CLARK V. CHAPPELL                      39
    2. Issue 2: In light of Godoy v. Spearman, we
    remand for further proceedings on Clark’s claim
    that his rights to due process and an impartial jury
    were violated when a juror communicated with
    his minister.
    Clark argues that his rights to due process and an
    impartial jury trial were violated because one of the jurors
    consulted with his minister about the case during trial.
    The Sixth Amendment ensures a right to an impartial
    jury. Claims of improper juror contact with a third party are
    governed by the Mattox/Remmer framework. In Mattox v.
    United States, the Supreme Court underscored that “[i]t is
    vital in capital cases that the jury should pass upon the case
    free from external causes tending to disturb the exercise of
    deliberate and unbiased judgment.” 
    146 U.S. 140
    , 149
    (1892), called into doubt on other grounds by Warger v.
    Shauers, 
    135 S. Ct. 521
    , 526–27 (2014). The Court
    emphasized that: “Private communications, possibly
    prejudicial, between jurors and third persons, or witnesses,
    or the officer in charge, are absolutely forbidden, and
    invalidate the verdict, at least unless their harmlessness is
    made to appear.” Id. at 150 (granting a new trial where a
    bailiff remarked to jurors that the defendant had killed two
    other people and where a newspaper article discussing the
    trial and the defendant’s criminal history was brought into
    the jury room).
    The Supreme Court in Remmer v. United States built
    upon Mattox, holding that “[t]he presumption is not
    conclusive, but the burden rests heavily upon the
    Government to establish, after notice to and hearing of the
    defendant, that such contact with the juror was harmless to
    the defendant.” 
    347 U.S. 227
    , 229 (1954). The Court
    explained that “a hearing with all interested parties” should
    40                  CLARK V. CHAPPELL
    be conducted to “determine the circumstances, the impact
    thereof upon the juror, and whether or not [the contact] was
    prejudicial.” 
    Id. at 230
     (remanding for a hearing where FBI
    agents contacted a juror regarding an alleged attempt to bribe
    the juror and where the district court and prosecution ex
    parte determined that the communication was harmless
    without hearing from or informing the defendant).
    In Godoy, we combined the analyses of Mattox and
    Remmer into a “two-step framework”:
    When a defendant alleges improper contact
    between a juror and an outside party, the
    court asks at step one whether the contact was
    “possibly prejudicial.” Mattox, 
    146 U.S. at 150
    . If so, the contact is “deemed
    presumptively prejudicial” and the court
    moves to step two, where the “burden rests
    heavily upon the [state] to establish” the
    contact was actually “harmless.” Remmer,
    
    347 U.S. at 229
    . If the state does not prove
    harmlessness, the court sets aside the verdict.
    When the presumption arises but the
    prejudicial effect of the contact is unclear, the
    trial court must hold a “hearing” to
    “determine the circumstances [of the
    contact], the impact thereof upon the juror,
    and     whether        or    not      it    was
    prejudicial.” 
    Id.
     at 229–30.
    861 F.3d at 962 (alterations in original) (parallel citations
    omitted) (remanding for an evidentiary hearing where a juror
    allegedly communicated with a “judge friend” about the case
    while it was ongoing).
    CLARK V. CHAPPELL                      41
    As an initial matter, even before triggering the
    presumption, Godoy stresses that a determination must be
    made into the type of contact at issue. “We recognize the
    practical impossibility of shielding jurors from all contact
    with the outside world, and also that not all such contacts
    risk influencing the verdict.” Id. at 967 (emphasis added).
    “[D]ue process does not require a new trial every time a juror
    has been placed in a potentially compromising
    situation.” Smith v. Phillips, 
    455 U.S. 209
    , 217 (1982); see
    also Tarango v. McDaniel, 
    837 F.3d 936
    , 946 (9th Cir.
    2016). For example, “chance contacts between witnesses
    and jury members—while passing in the hall or crowded
    together in an elevator,” do not trigger the presumption
    because they are “[t]hreadbare or speculative allegations” of
    misconduct. Godoy, 861 F.3d at 967 (quoting Tarango,
    837 F.3d at 947, 951); see also United States v. Hendrix,
    
    549 F.2d 1225
    , 1229 (9th Cir. 1977) (finding that “not every
    incident of juror misconduct or bias requires a new trial”).
    Thus, folded into defendant’s burden at step one, before
    triggering the presumption, is a showing that the juror’s
    contact with the non-juror was “sufficiently improper.”
    Godoy, 861 F.3d at 967 (emphasis added).
    Once the contact has been determined to be sufficiently
    improper, the court moves on to the second half of the first
    step: determining whether the sufficiently improper contact
    gives rise to a “credible risk of affecting the outcome of the
    case.” Id. at 967 (emphasis added). Godoy instructs that
    “the defendant’s burden at step one to show a possibility of
    prejudice is not onerous.” Id. at 968. Because “highly
    troubling contacts do not necessarily raise a presumption of
    prejudice,” courts “consider[] the full context of the contact
    to determine whether a credible risk of prejudice exists.” Id.
    at 967. For example, was the communication significant
    because it was with a non-juror who was “deeply entangled
    42                   CLARK V. CHAPPELL
    in [the] case” (such as a bailiff, law enforcement agent,
    victim, or witness), or was the communication “innocuous”?
    Id. at 967–68 (alteration in original) (quoting Tarango,
    837 F.3d at 949).             To determine “whether the
    communication raised a risk of influencing the verdict,” the
    court may consider factors such as “the length and nature of
    the contact, the identity and role at trial of the parties
    involved, evidence of actual impact on the juror, and the
    possibility of eliminating prejudice through a limiting
    instruction.” Caliendo v. Warden of Cal. Men’s Colony,
    
    365 F.3d 691
    , 697–98 (9th Cir. 2004). Taking the
    “surrounding circumstances” into consideration, when the
    juror’s improper communication with a non-juror interferes
    with the juror’s role as a juror and infects the jury as a whole,
    it raises a credible risk of affecting the outcome. Godoy
    establishes that when the juror’s communication is
    sufficiently improper to raise a credible risk of affecting the
    outcome, then there is a presumption of prejudice. 861 F.3d
    at 968.
    Once the presumption of prejudice is triggered, the
    burden shifts to the state “to disprove prejudice.” Id. at 959.
    Godoy illustrates a cautionary tale in its finding that the
    California Court of Appeal erred by “not requir[ing] the state
    to make any showing at step two.” Id. at 964. The state must
    present “contrary evidence” and “[i]t is not enough, as the
    state court did [in Godoy], to draw contrary inferences from
    the same statement that established the presumption in the
    first place.” Id. at 959; see also Tex. Dep’t of Cmty. Affairs
    v. Burdine, 
    450 U.S. 248
    , 254 (1981) (finding that, upon the
    burden shifting, when the defendant “is silent in the face of
    the presumption, the court must enter judgment for the
    plaintiff because no issue of fact remains in the case”). We
    provided an instructive, non-exhaustive list of examples in
    Godoy, including that the prosecution could point to
    CLARK V. CHAPPELL                        43
    “contrary evidence elsewhere in the existing record that
    sheds new light on the potentially prejudicial
    communication.” Godoy, 861 F.3d at 969. Or, if the
    prejudicial effect is “unclear from the existing record,” a
    hearing may allow the court to “determine the circumstances
    [of the improper contact], the impact thereof upon the juror,
    and whether or not it was prejudicial.” Id. at 959 (quoting
    Remmer, 
    347 U.S. at
    229–30).
    Almost a decade after Clark’s conviction, the defense
    obtained a declaration from Juror Barnes. In his 1996
    declaration, Barnes explained that, during the guilt phase of
    trial, he met with his “minister about the propriety of
    imposing the death penalty.” After “explain[ing] to [the
    minister his] role in the trial and the facts of the case,” the
    minister told him “that in these circumstances the death
    sentence would be appropriate because the Bible says, ‘an
    eye for an eye.’” According to Juror Barnes’ declaration,
    “[t]he minister’s advice was useful,” and Barnes affirmed
    that he “had long believed that anyone who is guilty of
    murder and convicted with a special circumstance should be
    given the death penalty.”
    Although the district court found that “the contact
    between Barnes and his minister was insufficient to raise a
    presumption of a substantial and injurious effect on the
    verdict,” the district court did not have the benefit of our
    decision in Godoy to determine whether the contact was
    “sufficiently improper” and raised “a credible risk of
    affecting the outcome of the case.” Godoy, 861 F.3d at 967.
    When faced with a determination of applying a new legal
    principle, “[a] standard practice, in habeas and non-habeas
    cases alike, is to remand to the district court for a decision in
    the first instance.” Detrich v. Ryan, 
    740 F.3d 1237
    , 1248
    (9th Cir. 2013) (en banc). “[W]e operate more effectively as
    44                      CLARK V. CHAPPELL
    a reviewing court than as a court of first instance.” 
    Id.
     at
    1248–49. Because “we are without the benefit of the district
    court’s analysis” on the new standard, Shirk v. U.S. ex rel.
    Dep’t of Interior, 
    773 F.3d 999
    , 1007 (9th Cir. 2014), we
    remand to the district court to apply in the first instance our
    Godoy framework.
    By remanding, we are not opining that the district court
    was incorrect in its conclusion or reasoning but only
    directing it to apply the new standard. For guidance, we
    emphasize that Godoy does not say that all juror
    communications with a non-juror require that the verdict or
    sentence be set aside. 3 Inherent in the first step of Godoy is
    first determining whether the contact was “sufficiently
    improper” and then determining whether that improper
    contact had a “credible risk of influencing the verdict.” If,
    and only if, the court finds that these steps are satisfied is the
    presumption triggered and the subsequent steps reached. We
    do not opine whether now, over 30 years after Clark’s trial,
    an evidentiary hearing is required. However, if the district
    court finds the presumption triggered, the state must address
    its burden of showing that Barnes’ contact with his minister
    was harmless—in other words, that there was “no reasonable
    possibility that the communication . . . influence[d] the
    verdict,” Godoy, 861 F.3d at 968 (quoting Caliendo,
    
    365 F.3d at 697
    ), including the communication impacting
    the jury’s deliberations, id. at 970. Investigator Wong’s
    declaration, which was previously before the district court
    but which the state’s counsel inexplicably failed to address
    on appeal, might support such a conclusion. However,
    because we remand for the district court to apply Godoy, we
    do not reach the evidentiary issues raised by the parties,
    3
    If the contact occurred after the jury found Clark guilty but before
    sentencing, it would have affected the sentence, not the verdict.
    CLARK V. CHAPPELL                       45
    including the admissibility of the Wong declaration. We
    leave it to the district court on remand to consider this
    evidence and any other evidence proffered by the parties
    when making the determination whether or not to hold an
    evidentiary hearing in fulfilling its responsibility to
    determine whether Barnes’ meeting with his minister was
    harmless. Again, we emphasize that the district court should
    read nothing more into our opinion than to apply the new
    standard in the first instance.
    3. Issue 3: We deny Clark’s claim that trial counsel
    was ineffective for calling Dr. Mayland to testify
    at the pre-trial suppression hearing.
    Clark argues that trial counsel provided ineffective
    assistance of counsel by calling Dr. Peter Mayland to testify
    at the pre-trial suppression hearing. In particular, Clark
    argues that trial counsel was ineffective in three ways:
    (1) trial counsel called Dr. Mayland to testify without full
    knowledge of what Dr. Mayland would say; (2) trial counsel
    failed to obtain a court order assuring that Dr. Mayland’s
    pre-trial testimony would not be used at trial; and (3) trial
    counsel failed to ensure that the trial experts were not
    exposed to inculpatory information from Dr. Mayland’s pre-
    trial testimony. In holding that Allen did not act deficiently,
    the district court found that it was not unreasonable for Allen
    to rely on his belief that the trial court had stated that the
    statements from the suppression hearing would not be
    admissible at trial. Although we agree that Allen’s reliance
    may not have been unreasonable, it was deficient for Allen
    to call Dr. Mayland to testify at the suppression hearing
    without Allen having fair knowledge of his testimony.
    Nonetheless, we conclude that Clark fails to show that he
    was prejudiced by Allen’s performance.
    46                   CLARK V. CHAPPELL
    a. Allen’s performance was deficient.
    Allen’s calling Dr. Mayland to testify at the pre-trial
    suppression hearing without having fair knowledge of his
    testimony constitutes representation that “fell below an
    objective standard of reasonableness.” Strickland, 
    466 U.S. at 688
    ; see also supra Part IV(B)(1).
    Allen’s 2005 declaration indicates that Dr. Mayland’s
    testimony was intended to establish that “as a result of
    Mr. Clark’s background and psychological disabilities, there
    was a substantial doubt as to whether Mr. Clark knowingly
    and intelligently waived his rights” when he confessed to the
    police. Dr. Mayland’s 2005 declaration indicates that his
    role was focused on “Mr. Clark’s traumatic history,
    deprivations, inadequate institutional responses, and
    substance abuse background.” Clark argues, however, that
    Allen should have been aware that Dr. Mayland had
    developed a therapeutic relationship with Clark and had
    questioned Clark extensively about the particular facts of the
    crimes.       In particular, at the suppression hearing,
    Dr. Mayland testified on cross-examination that Clark had
    discussed the details of the crimes with Dr. Mayland not just
    once in the initial interview at the Mendocino County Jail
    after his arrest (which Allen knew about), but also in an
    interview about a month after the initial interview (which
    Allen apparently was not informed). Dr. Mayland then
    testified to the detailed facts of the crimes that Clark relayed
    to him, including the two lewd statements made by Clark to
    Grover, Clark’s admission of rape, and Clark’s account of
    the crimes that appears to undercut the defense theory of a
    rage reaction. Allen’s declaration acknowledges that he was
    “surprised to learn that Dr. Mayland had discussed the facts
    of the crime with [Clark] beyond his initial interview, and
    what information Dr. Mayland had obtained from [Clark].”
    CLARK V. CHAPPELL                           47
    Allen’s unawareness of the extent to which his own
    expert witness would testify is deficient performance under
    Strickland. Trial counsel is not required to personally
    interview each witness, especially “if the witness’s account
    is fairly known to counsel.” LaGrand v. Stewart, 
    133 F.3d 1253
    , 1274 (9th Cir. 1998) (citing Eggleston v. United
    States, 
    798 F.2d 374
    , 376 (9th Cir. 1986)). However,
    counsel must have a fair knowledge of the witness’s account
    before calling the person as a witness. Here, the record
    indicates that Allen was unaware that Dr. Mayland had
    discussed the facts of the crimes with Clark beyond the
    initial interview. However, Allen regularly discussed the
    case with Dr. Mayland and had a definite defense strategy of
    using Dr. Mayland as an expert. This highlights the
    unreasonableness of Allen failing to ascertain Dr. Mayland’s
    account before calling him as a witness. Because Allen
    called Dr. Mayland to testify without Dr. Mayland’s account
    being “fairly known to counsel,” id. at 1274, Allen’s conduct
    was objectively unreasonable. 4
    b. Clark fails to establish prejudice.
    Although Allen’s conduct was deficient, Clark fails to
    establish that Allen’s performance was prejudicial. To show
    prejudice, Clark must establish that “counsel’s errors were
    so serious as to deprive the defendant of a fair trial, a trial
    whose result is reliable.” Strickland, 
    466 U.S. at 687
    . “An
    error by counsel, even if professionally unreasonable, does
    not warrant setting aside the judgment of a criminal
    proceeding if the error had no effect on the judgment.” 
    Id.
    4
    Clark raises several arguments for why trial counsel acted
    deficiently in regard to Dr. Mayland’s testimony. Because we conclude
    Allen acted unreasonably by calling Dr. Mayland without fair knowledge
    of his testimony, we need not reach these additional arguments.
    48                     CLARK V. CHAPPELL
    at 691. Accordingly, a defendant must show “there is a
    reasonable probability that, but for counsel’s unprofessional
    errors, the result of the proceeding would have been
    different.” 
    Id. at 694
    . “A reasonable probability is a
    probability sufficient to undermine confidence in the
    outcome.” 
    Id.
    When a defendant challenges a death sentence, the
    question is whether “there is a reasonable probability that,
    absent the errors, the sentencer—including an appellate
    court, to the extent it independently reweighs the evidence—
    would have concluded that the balance of aggravating and
    mitigating circumstances did not warrant death.” 
    Id. at 695
    .
    To answer that question, we must “compare the evidence
    that actually was presented to the jury with the evidence that
    might have been presented had counsel acted differently,”
    Bonin v. Calderon, 
    59 F.3d 815
    , 834 (9th Cir. 1995), and
    “evaluate whether the difference between what was
    presented and what could have been presented is sufficient
    to ‘undermine confidence in the outcome’ of the
    proceeding,” Lambright v. Schriro, 
    490 F.3d 1103
    , 1121 (9th
    Cir. 2007) (per curiam) (quoting Strickland, 
    466 U.S. at 694
    ).
    Clark fails to meet his burden. Clark focuses on the two
    lewd remarks that Clark told Dr. Mayland he made to
    Grover, 5 which, according to Clark, were the “main
    statements that were to infect the trial later.” However, the
    same or similar information was admitted at trial through
    Clark’s two confessions and defense expert testimony.
    Detective Kelley testified: “[Clark] said that, this is in his
    5
    At the pre-trial suppression hearing, Dr. Mayland testified that
    Clark admitted to him that Clark demanded of Grover, “Why don’t you
    show me some tit, bitch” and “suck my dick.”
    CLARK V. CHAPPELL                        49
    words, ‘she flashed a titty at me.’” Clark admitted similar
    information in his taped confession, in which he talks about
    Grover exposing her breasts to him. Defense expert
    Dr.Raffle testified at trial, summarizing that Clark admitted
    to him that he told Grover “to take off her clothes, suck [his]
    dick.” Clark fails to establish that the lewd statements he
    admitted to Dr. Mayland differ from any of the lewd
    statements he admitted during his confessions to the police
    and during his sessions with Dr. Raffle, which were
    disclosed to the jury without any objection by Clark.
    Furthermore, to the extent that Clark argues prejudice
    from the prosecution using Dr. Mayland’s statements to
    impeach the defense witnesses’ theory of a rage reaction by
    showing that Clark was goal-oriented in his behavior, Clark
    also fails to meet his burden. Almost all of the details that
    were included in Dr. Mayland’s testimony came in through
    the two police confessions. In Clark’s first confession to the
    police, he did not discuss blacking out during the crimes.
    However, Clark admitted choking Grover, stabbing her, and
    hitting her with the concrete block. The primary detail not
    included in Clark’s confession to the police was Clark’s
    admission of rape. But in addition to the physical evidence
    presented at trial that indicated rape (e.g., vaginal lacerations
    and semen and pubic hair consistencies), defense experts
    Drs. Roberts and Raffle testified that Clark admitted to them
    that he raped Grover.
    Given the gruesome nature of the crimes and that Clark
    never asserted innocence, Clark is hard-pressed to establish
    that Dr. Mayland’s testimony prejudiced him.              To
    demonstrate prejudice, Clark must show that “there is a
    reasonable probability that, but for counsel’s unprofessional
    errors, the result of the proceeding would have been
    different.” Franklin v. Johnson, 
    290 F.3d 1223
    , 1233 (9th
    50                   CLARK V. CHAPPELL
    Cir. 2002) (quoting Babbitt v. Calderon, 
    151 F.3d 1170
    ,
    1173 (9th Cir. 1998)). Because Clark fails to demonstrate a
    reasonable probability that Dr. Mayland’s reference to
    Clark’s lewd statements or his statements concerning Clark
    being goal-oriented affected the jury’s balance of
    aggravating circumstances and mitigating circumstances, we
    conclude he fails to establish prejudice necessary to show
    ineffective assistance of counsel on this claim.
    We deny habeas relief on Issue 3.
    4. Issue 4: We deny Clark’s claim that trial counsel
    was ineffective in preparing and presenting
    expert testimony.
    Clark argues that trial counsel was ineffective in the
    preparation and presentation of expert testimony.
    Specifically, Clark argues that counsel failed to adequately
    prepare: (a) experts regarding Dr. Beaber’s letter and
    Dr. Mayland’s statements; (b) expert witness Dr. Roberts;
    and (c) expert witness Dr. Raffle.
    Strickland governs this ineffective assistance of counsel
    claim: Clark must show that trial counsel’s performance was
    both deficient and prejudicial. See 
    466 U.S. at 687
    ; see also
    supra Part IV(B)(1), (B)(3)(b). “[T]he duty to investigate
    and prepare a defense” is flexible, but it “is not limitless: it
    does not necessarily require that every conceivable witness
    be interviewed or that counsel must pursue ‘every path until
    it bears fruit or until all conceivable hope withers.’” United
    States v. Tucker, 
    716 F.2d 576
    , 584 (9th Cir. 1983) (quoting
    Lovett v. Florida, 
    627 F.2d 706
    , 708 (5th Cir. 1980)).
    CLARK V. CHAPPELL                       51
    a. Allen’s conduct regarding Dr. Beaber’s
    letter did not prejudice Clark.
    Clark first argues that Allen failed to adequately prepare
    the testifying experts regarding Dr. Beaber’s letter. Clark
    does not argue that counsel was deficient for failing to seek
    suppression of Dr. Beaber’s letter or in having Dr. Beaber’s
    letter prepared in the first instance. Instead, Clark asserts
    that Allen was unaware of the existence of Dr. Beaber’s
    letter and that he unintentionally gave Dr. Beaber’s letter to
    Dr. Raffle. In essence, Clark argues had counsel not given
    the letter to the testifying experts or had Allen discussed the
    letter with the experts in detail, the outcome of trial would
    have been different. Because we conclude that Clark fails to
    establish prejudice, we need not address whether Allen’s
    conduct was deficient.
    Clark fails to establish prejudice because his arguments
    are contradicted by the record. When confronted with
    Dr. Beaber’s letter during cross-examination, Dr. Raffle
    responded:
    It does not give me any of his clinical data,
    nor do I have available to me any of his
    clinical data for analysis. That is to say his
    testing data.
    It would be—it’s kind of equivalent to a
    radiologist taking a series of X-rays and
    sending me a three-paragraph summary but
    not sending the X-rays so that I could have
    another radiologist look at them myself.
    Dr. Raffle’s testimony indicates that he found the contents
    of the letter unhelpful. Given that Dr. Raffle responded by
    noting the lack of underlying clinical data and the report’s
    52                   CLARK V. CHAPPELL
    brevity, Clark fails to demonstrate how he was prejudiced by
    Allen’s performance.
    b. Allen’s preparation of Dr. Roberts to testify
    did not prejudice Clark.
    Second, Clark argues that the outcome of trial would
    have been different had Allen better prepared Dr. Roberts to
    testify. The defense called Dr. Roberts as an expert witness
    during the guilt phase to testify to Clark’s impulsivity under
    stress and Clark’s drug use. Clark asserts that trial counsel
    should have never called Dr. Roberts to testify because his
    opinion that Clark’s depression was “situational” was
    contrary to the use of Clark’s depression as mitigation. He
    also asserts that counsel failed to provide Dr. Roberts with
    an adequate clinical history in order to render a proper
    diagnosis.
    The record, however, indicates that Dr. Roberts
    interviewed Clark and conducted extensive psychological
    testing in preparation for trial. Based on the tests Dr. Roberts
    conducted, Dr. Roberts reported a diagnosis of anti-social
    personality disorder (“ASPD”), as well as some indications
    of borderline personality disorder. Although Dr. Roberts
    requested more information regarding Clark’s mental health
    history, trial counsel referred Dr. Roberts only to the history
    contained in Dr. Raffle’s report. Trial counsel apparently
    was not aware at the time that the historical data portion of
    Dr. Raffle’s report was incomplete. But Dr. Roberts has not
    indicated that his testimony regarding Clark’s various test
    scores was incorrect or would have changed in light of any
    additional information that could have been provided.
    Clark’s primary argument seems to be that, if Dr. Roberts
    had more complete information about Clark’s history than
    was contained in Dr. Raffle’s report, Dr. Roberts may have
    been able to offer reasons why a borderline personality
    CLARK V. CHAPPELL                       53
    disorder was a better diagnosis than ASPD. But even then,
    trial counsel’s tactical decision to put on a witness who had
    diagnosed Clark with ASPD, rather than stress a possible
    borderline personality disorder, is entitled to great deference.
    Mitchell v. United States, 
    790 F.3d 881
    , 892 (9th Cir. 2015)
    (rejecting Mitchell’s argument that “counsel should have
    had Mitchell examined again by yet another doctor in search
    of a less damning diagnosis”). The record does not support
    Clark’s argument that had Allen acted differently in calling
    and preparing Dr. Roberts to testify, the result of trial would
    have been different.
    c. Allen’s conduct in preparing Dr. Raffle to
    testify was not deficient.
    Third, Clark argues that trial counsel was deficient in the
    preparation of defense expert Dr. Raffle, who was asked to
    render an opinion regarding Clark’s psychological state at
    the time of the crimes. In particular, Clark argues that
    Dr. Raffle did not have sufficient information regarding
    Clark’s background and history to render an opinion.
    The record, however, indicates that, while Dr. Raffle did
    not have all the documents related to Clark’s history, counsel
    did provide Dr. Raffle with substantial background
    materials, including school psychologists’ evaluations and
    state mental health records. Clark emphasized Dr. Raffle’s
    lack of information about the jailhouse report that Clark had
    been “boastful and cocky” about the crimes and about drug
    levels in Clark’s blood at the time of the crimes. But the
    record provides a reasonable explanation for Dr. Raffle’s
    lack of awareness of these matters. The trial transcript
    reflects that counsel did not even know about the jailhouse
    report when Dr. Raffle testified. Given that counsel did not
    have the report at the time, he could not have given the report
    to Dr. Raffle. Regarding the drug levels in Clark’s blood at
    54                     CLARK V. CHAPPELL
    the time of the crimes, trial counsel’s declaration indicates
    that witnesses Drs. Baselt and Smith were the experts
    charged with testifying about Clark’s level of intoxication at
    the time of the crimes, not Dr. Raffle. Moreover, although
    Dr. Raffle had some training in psychopharmacology, this
    was not Dr. Raffle’s specialty. Counsel’s tactical decision
    to have different witnesses testify regarding the level of
    methamphetamine and other drugs in Clark’s blood at the
    time of the crimes is entitled to deference. Mitchell,
    790 F.3d at 892. We find that Clark has not shown that
    Allen’s performance was deficient in preparing Dr. Raffle to
    testify. 6
    We therefore conclude that Clark has not established
    ineffective assistance of counsel in the preparation and
    presentation of expert testimony. We deny habeas relief on
    Issue 4.
    5. Issue 5: We deny Clark’s claim that trial counsel
    was ineffective for failing to investigate and
    present evidence, at the penalty phase, of Clark’s
    fetal alcohol exposure, traumatic birth, and the
    effects of both.
    Clark argues that trial counsel provided ineffective
    assistance of counsel for failing to investigate, prepare, and
    present evidence of Clark’s alcohol exposure as a fetus,
    traumatic birth, and the enduring effects of both on Clark’s
    development.      Clark asserts that four experts’ post-
    conviction declarations show that his “medical records
    contained evidence that he had a difficult birth and that his
    mother was heavily medicated”; “that his mother was
    6
    However, even if we determined that Clark could show deficiency,
    Clark has not shown prejudice.
    CLARK V. CHAPPELL                      55
    drinking alcohol during her pregnancy and suffering
    beatings by Mr. Clark’s father”; and “that Mr. Clark’s
    difficulties in this area continued into childhood, with
    developmental delays.”
    Again, under Strickland, Clark must show that trial
    counsel’s performance was both deficient and prejudicial.
    See 
    466 U.S. at 687
    ; see also supra Part IV(B)(1). Counsel’s
    duty to investigate is “not limitless.” Tucker, 
    716 F.2d at 584
    . “[A] tactical decision may constitute constitutionally
    adequate representation even if, in hindsight, a different
    defense might have fared better.” Bemore v. Chappell,
    
    788 F.3d 1151
    , 1163 (9th Cir. 2015). We conclude that trial
    counsel’s performance was not deficient.
    To establish deficient performance, the petitioner must
    show that “counsel’s representation fell below an objective
    standard of reasonableness.” Strickland, 
    466 U.S. at 688
    ;
    see also supra Part IV(B)(1).
    During trial, Clark’s counsel presented a defense theory
    that centered around disputing that he was able to form the
    requisite state of mind to kill based on his emotional
    difficulties, severe depression, and chronic drug use that
    culminated in a “rage reaction” on the night of the murder.
    The defense called several witnesses to testify that he used
    drugs from an early age and regularly ingested alcohol,
    marijuana, and methamphetamine. Witnesses also testified
    that Clark was severely depressed, attempted suicide in
    February 1985, and increased his drug usage following the
    suicide attempt. During the penalty phase, the defense
    presented testimony of 23 witnesses in mitigation—
    including family members, friends, scoutmasters, a teacher
    and a mental health counselor—who testified to the
    circumstances of Clark’s life and character.
    56                   CLARK V. CHAPPELL
    While Clark’s counsel did not present evidence of the
    trauma Clark may have suffered in utero and during birth,
    Allen did investigate and make a substantial presentation of
    evidence of Clark’s childhood, his abuse, and the resulting
    effects of both on Clark’s mental and psychological
    development. Clark is essentially arguing on appeal that his
    trial counsel should have investigated further and presented
    a more complete picture of his life history or presented it in
    a different manner—beginning with his mother’s pregnancy.
    But Allen did present extensive evidence of Clark’s parents’
    alcohol use, his father’s abuse, Clark’s early use of drugs and
    alcohol, his difficulties in school, his severe depression, and
    how his family life drastically deteriorated after the deaths
    of his father and grandfathers—including his mother’s
    neglect and the filthy home conditions. Allen painted a
    bleak picture of Clark’s home life as a child and teenager and
    its effects on Clark’s development, arguably mitigating the
    heinousness of the crimes. Perhaps, Allen could have done
    more—as indicated by Dr. Roberts’s declaration that his
    request for additional information was denied by Allen. But
    a showing of deficient performance turns not on whether
    Allen could have done more but on whether his conduct was
    deficient according to professional “standards in effect at the
    time of [Clark’s] trial.” Hamilton v. Ayers, 
    583 F.3d 1100
    ,
    1129 (9th Cir. 2009).
    The standards in effect at the time of Clark’s trial in 1987
    recognized that “[i]t is the duty of the lawyer to conduct a
    prompt investigation of the circumstances of the case and to
    explore all avenues leading to facts relevant to the merits of
    the case and the penalty in the event of conviction.” 
    Id.
    (quoting 1 ABA Standards for Criminal Justice 4–4.1 (2d ed.
    1980)); see also 
    id.
     (“As the Supreme Court has long
    recognized, the ABA Standards for Criminal Justice provide
    guidance as to what constitutes a ‘reasonable’ performance.”
    CLARK V. CHAPPELL                      57
    (quoting Strickland, 
    466 U.S. at
    688–89)). Unlike cases
    where we have found deficient performance for failing to
    investigate and present mitigating evidence, here Allen
    presented extensive evidence of Clark’s childhood abuse,
    early use of drugs and alcohol, difficulties in school, and
    severe depression. Cf. Summerlin v. Schriro, 
    427 F.3d 623
    ,
    631 (9th Cir. 2005) (en banc) (holding that counsel “utterly
    failed in his duty to investigate and develop potential
    mitigating evidence for presentation at the penalty phase” by
    not conducting any investigation into family or social history
    and “even a minimal investigation” would have uncovered a
    childhood with severe abuse). Much of the evidence that
    Clark argues, post-conviction, should have been presented
    goes to explain why Clark was the way that Allen presented
    him to the jury, not that Clark was presented in an incorrect
    or incomplete light to the jury. The evidence developed
    post-conviction does not suggest that Allen’s presentation of
    Clark’s troubled background was objectively unreasonable.
    Allen presented the jury with substantial evidence of Clark’s
    difficult childhood, his depression, and his drug use. The
    later-developed evidence does not dispute this, but rather
    offers an additional perspective on Clark’s character. But
    this does not establish unreasonable performance. See
    Gustave v. United States, 
    627 F.2d 901
    , 904 (9th Cir. 1980)
    (“Mere criticism of a tactic or strategy is not in itself
    sufficient to support a charge of inadequate
    representation.”).
    We conclude that Clark fails to establish that Allen’s
    performance was deficient in not investigating, preparing,
    and presenting evidence of Clark’s alcohol exposure as a
    58                     CLARK V. CHAPPELL
    fetus, traumatic birth, and the enduring effects of both. 7 We
    deny habeas relief on Issue 5.
    6. Issue 6: We deny Clark’s claim that trial counsel
    was ineffective for failing to argue that Dino
    Stevens was an alternative suspect and that the
    state committed prosecutorial misconduct for
    failing to disclose information about Dino.
    Clark argues that: (a) his trial counsel provided
    ineffective assistance of counsel by failing to investigate and
    present evidence that Dino Stevens was an alternative
    suspect or co-participant in the crimes; and (b) the state
    committed prosecutorial misconduct by failing to disclose
    information about Dino to the defense.
    Strickland governs this ineffective assistance of counsel
    claim: Clark must show that trial counsel’s performance was
    both deficient and prejudicial. See 
    466 U.S. at 687
    ; see also
    supra Part IV(B)(1). We conclude that Clark does not meet
    his burden of showing that Allen’s conduct was deficient or
    that he was prejudiced by the prosecution’s failure to
    disclose information about Dino.
    a. Counsel’s performance was not deficient.
    Deficient performance requires showing that “counsel’s
    representation fell below an objective standard of
    reasonableness.” Strickland, 
    466 U.S. at 688
    .
    Clark’s arguments that trial counsel was deficient in
    failing to investigate and present evidence that Dino was an
    7
    However, even if we determined that Clark could show deficiency,
    Clark has not shown prejudice.
    CLARK V. CHAPPELL                       59
    alternative suspect or involved in Grover’s murder, are
    unavailing. Clark argues that Dino was the last person with
    him before Grover was murdered, had a history of drug use
    and violence towards women, gave contradicting stories to
    the police about his whereabouts during the murder, and
    claimed to have known Grover. In support, Clark points to
    post-conviction declarations by: (a) his brother Robert
    Clark, who stated Dino admitted to being present during the
    murder; (b) his ex-girlfriend Debra Dilman, who stated Dino
    admitted that he and Clark met Grover at the bus station; and
    (c) Dino’s ex-girlfriend Tami Scribner, who stated that Dino
    asked her to lie about him staying at her home on the night
    of the murder and that Dino told her that he found the
    screwdriver in the car. Based on this evidence, Clark argues
    that Allen acted unreasonably in not investigating Dino
    because this information would have cast doubt on Clark
    committing the crimes, would have undermined his
    confessions, and would have supported the defense theory at
    trial that Clark was so intoxicated that he could not
    accurately remember what transpired.
    At best, Clark has offered a different trial strategy that,
    in hindsight, he claims could have been more fruitful than
    the strategy taken at trial. See Gustave, 
    627 F.2d at 904
    (“Mere criticism of a tactic or strategy is not in itself
    sufficient to support a charge of inadequate
    representation.”). According to his 2005 declaration, Allen
    looked into pursuing a third-party defense theory but
    discarded it in light of Clark’s confessions. Asserting that
    Dino had been present would have contradicted Clark’s
    confessions. However, the sincerity and truthfulness of
    Clark’s confessions was an integral part of the defense’s
    strategy to avoid the death penalty.
    60                     CLARK V. CHAPPELL
    Furthermore, given the extent of physical evidence
    linking Clark to the crimes, the record shows Allen acted
    reasonably in not pursuing a defense based on Dino’s alleged
    involvement. Even taking the most egregious declaration—
    Robert Clark’s declaration that Dino admitted being present
    during Grover’s murder—and assuming its admissibility and
    credibility, the record is silent on any evidence to support
    this assertion. The hair, blood, and semen linked Clark and
    Grover, not Dino and Grover. The pubic hair found on
    Grover’s body was consistent with Clark’s and the analysis
    of semen found on Grover’s body could not rule out Clark
    as a source. The blood and hair found on Clark’s jeans and
    shoes were consistent with both Clark’s and Grover’s.
    Moreover, Clark never once mentioned Dino’s involvement,
    including in his report to the police at the Ron-Dee-Voo
    restaurant, his two police confessions, or to any of the mental
    health experts. Based on the overwhelming evidence, it was
    reasonable to view Dino’s involvement as a weak theory, at
    best, and to decide to pursue other avenues. Clark, thus, has
    not shown Allen’s performance fell below an objective
    standard of reasonableness. 8
    b. Alleged Prosecutorial Misconduct
    Clark also argues that the prosecution engaged in
    misconduct by failing to disclose that Dino: (1) had
    “favorable resolutions” for pending charges and offered to
    “make a deal”; and (2) gave statements to the prosecution
    during pre-trial investigations that were inconsistent with his
    trial testimony regarding drug use.
    8
    However, even if we determined that Clark could show deficiency,
    Clark has not shown prejudice.
    CLARK V. CHAPPELL                       61
    Under Brady v. Maryland, “suppression by the
    prosecution of evidence favorable to an accused upon
    request violates due process where the evidence is material
    either to guilt or to punishment, irrespective of the good faith
    or bad faith of the prosecution.” 
    373 U.S. 83
    , 87 (1963); see
    also Kyles v. Whitley, 
    514 U.S. 419
    , 433 (1995) (explaining
    that post-Brady case law has made “clear that a defendant’s
    failure to request favorable evidence [does] not leave the
    Government free of all obligation”). “[T]here are three
    elements to a Brady violation: (1) ‘the evidence at issue must
    be favorable to the accused, either because it is exculpatory,
    or because it is impeaching,’ (2) ‘that evidence must have
    been suppressed by the State, either willfully or
    inadvertently,’ and (3) ‘prejudice must have ensued.’” Reis-
    Campos v. Biter, 
    832 F.3d 968
    , 975 (9th Cir. 2016) (quoting
    Strickler v. Greene, 
    527 U.S. 263
    , 281–82 (1999)). “With
    respect to the prejudice element, ‘evidence is material only
    if there is a reasonable probability that, had the evidence
    been disclosed to the defense, the result of the proceeding
    would have been different.” 
    Id.
     (quoting United States v.
    Bagley, 
    473 U.S. 667
    , 682 (1985)). “A ‘reasonable
    probability’ is a probability sufficient to undermine
    confidence in the outcome.” 
    Id.
     (quoting Bagley, 
    473 U.S. at 682
    ).
    First, Clark asserts that, although the prosecution
    provided a criminal history report with most of Dino’s
    arrests, the prosecution failed to disclose the “favorable
    resolutions” of Dino’s multiple pending cases, one of his
    arrests, and a request by Dino to “make a deal.” Clark
    contends that this information could have been used to
    impeach Dino to show that he was self-interested in
    testifying favorably for the prosecution in order to receive
    more lenient treatment in his own pending criminal charges.
    We find this argument unpersuasive. In light of Clark’s
    62                  CLARK V. CHAPPELL
    confessions and the overwhelming physical evidence against
    Clark connecting him to the murder and rape, Dino’s role at
    trial was so minimal that to impeach him would have been
    inconsequential to the verdict.
    Second, Clark’s assertion that the prosecution failed to
    disclose its pre-trial investigative notes that indicate Dino
    made a statement regarding drug use, which would have
    contradicted his trial testimony, is also unavailing. At trial,
    Dino denied his own drug use and claimed not to recall
    knowing of any drug use by Clark and Robyn Boyd,
    including on the night of the murder, other than some
    occasional marijuana. Clark, in contrast, argues that the
    prosecution failed to disclose investigation notes indicating
    that Dino said that Boyd did not want to admit that Dino
    stayed at her home on the night of the murder because of her
    involvement with drugs.           Clark contends that this
    information would have impeached Dino’s drug use
    testimony and would have raised doubts about Clark’s
    confessions and his intent, and thus would have resulted in a
    different verdict and sentence.
    However, the prosecutor’s notes provide minimal
    support for Clark’s intoxication defense beyond the
    extensive evidence already presented on Clark’s drug use.
    During Clark’s taped confession at the police station, he
    described his drug use. Clark’s drug use on the night of the
    murder was the subject of testimony of several witnesses,
    including David Smith, who testified that he and Clark used
    cocaine on the night of the murder, and Matt Williams, who
    testified that at 10:00 p.m. on the night of murder, Clark
    appeared to be under the influence of something other than
    alcohol. In light of this evidence, Clark has not shown a
    reasonable probability that, had the prosecutor’s notes been
    CLARK V. CHAPPELL                      63
    disclosed to the defense, the result of the proceeding would
    have been different.
    We deny habeas relief on Issue 6.
    C. Uncertified Claims
    In addition to the certified claims, Clark raises a number
    of uncertified claims. First, we reject the state’s argument
    that certain claims are procedurally barred from federal
    review. Second, we grant a COA on seven of the ten
    uncertified claims, and deny a COA on the others. Third, we
    deny habeas relief on all seven newly certified claims.
    1. We reject the state’s argument that Claims 14L,
    18, and 20 are procedurally barred from federal
    review.
    Based on the California Supreme Court’s denial of
    Clark’s second state habeas petition, the state argues that
    portions of certain claims are procedurally barred from
    federal court review because Clark failed to overcome the
    procedural default. In particular, the state argues that the
    California Supreme Court denied relief as untimely because
    the claims could have been, but were not, raised on direct
    appeal and because the claims were not filed in a timely
    manner. See In re William Clark, 
    855 P.2d 729
     (Cal. 1993);
    Ex parte Dixon, 
    264 P.2d 513
     (Cal. 1953). The state argues
    that California’s procedural bars were adequate and
    independent state grounds sufficient to preclude federal
    review. See Johnson v. Lee, 
    136 S. Ct. 1802
    , 1804 (2016)
    (per curiam) (reversing the Ninth Circuit “[b]ecause
    California’s procedural bar is longstanding, oft-cited, and
    shared by habeas courts across the Nation”); see also
    Johnson v. Montgomery, 
    899 F.3d 1052
    , 1060 (9th Cir.
    2018) (recognizing that California’s Dixon and timeliness
    64                   CLARK V. CHAPPELL
    procedural bars are adequate and independent state law
    grounds to bar federal habeas review). In response, Clark
    argues that these procedural defaults are not applicable
    because any default occurred before the California Supreme
    Court issued its decisions in In re William Clark and In re
    Robbins, 
    959 P.2d 311
     (Cal. 1998).
    The procedural bar doctrine is “a subcategory of the
    independent and adequate state ground doctrine” designed
    “to protect the state’s interests by giving it the opportunity
    to correct its own errors.” Robinson, 
    595 F.3d at 1100
    ; see
    also Coleman v. Thompson, 
    501 U.S. 722
    , 749 (1991)
    (“[W]e emphasize[] the important interests served by state
    procedural rules at every stage of the judicial process and the
    harm to the States that results when federal courts ignore
    these rules[.]”). “Under this doctrine, a federal court
    ordinarily will not review a state court ruling if the state court
    would find that the claim was barred pursuant to an
    independent and adequate state procedural rule.” Robinson,
    
    595 F.3d at 1100
    . However, we have recognized exceptions
    to the general rule for when “the petitioner can show either
    cause and prejudice, see Coleman, 
    501 U.S. at 750
    , or a
    fundamental miscarriage of justice, see Murray v. Carrier,
    
    477 U.S. 478
    , 495 (1986), or [when] the government
    waive[s] the procedural default, see Franklin v. Johnson,
    
    290 F.3d 1223
    , 1230, 1233 (9th Cir. 2002).” Robinson,
    
    595 F.3d at
    1100 n.10 (parallel citations omitted); see also
    Fields v. Calderon, 
    125 F.3d 757
    , 763 (9th Cir. 1997)
    (discussing the exceptions that have been developed by the
    California Supreme Court following Dixon and In re Harris,
    
    855 P.2d 391
    , 398–407 (Cal. 1993)).
    In California, “[t]he courts themselves have developed a
    number of ‘procedural bars’ in an attempt to put reasonable
    limits on collateral attacks by way of habeas corpus.” Briggs
    CLARK V. CHAPPELL                        65
    v. Brown, 
    400 P.3d 29
    , 47 (Cal. 2017) (quoting In re William
    Clark, 
    855 P.2d at
    763–70). Two such limits include
    procedural bars based on direct appeal (known as the Dixon
    rule) and on timeliness (known as the Clark rule). The
    bedrock to these principles is that “habeas corpus may not
    be employed as a substitute for appeal.” 
    Id.
     (citing In re
    Waltreus, 
    397 P.2d 1001
    , 1005 (Cal. 1965)).
    Under Dixon, a claim raised during habeas proceedings
    is barred when the petitioner could have, but failed to, raise
    the claim on direct appeal. See 264 P.2d at 513. We have
    emphasized that “Dixon stands for the proposition that an
    inexcusable failure to bring a trial-error claim on direct
    appeal normally bars consideration of that claim on habeas.”
    Park v. California, 
    202 F.3d 1146
    , 1149 (9th Cir. 2000).
    However, if “the state court of last resort . . . exercise[d] its
    opportunity to act on [petitioner’s] federal constitutional
    claims, then no procedural default occurred that would bar
    federal review of those claims.” 
    Id. at 1151
    .
    A second procedural default rule under California law
    was established in In re William Clark related to timeliness.
    855 P.2d at 751. There is “a presumption of timeliness for
    habeas petitions filed ‘within 90 days of the final due date
    for the filing of an appellant’s reply brief’” or “filed without
    substantial delay, that good cause justified a substantial
    delay, or that the petition fits within several enumerated
    exceptions.” Bradford v. Davis, 
    923 F.3d 599
    , 610–11 (9th
    Cir. 2019) (quoting In re William Clark, 
    855 P.2d at 751
    ).
    We have recognized that California’s timeliness rule for
    procedural default must “be analyzed at the time the
    petitioner filed his [applicable] state habeas petition” and
    “not . . . when the California Supreme Court denied his
    petition” or “he filed a [subsequent] state petition.” 
    Id.
    66                     CLARK V. CHAPPELL
    at 611 (citing Calderon v. U.S. Dist. Ct., 
    103 F.3d 72
    , 75 (9th
    Cir. 1996)).
    Here, the state has not met its burden of articulating the
    basis for us to determine that Claims 14L, 18, and 20 are
    procedurally barred. As Clark notes, the state’s procedural
    bar argument on Claim 18 was not actually decided by the
    district court who rejected procedural default only on
    “Claims 14, 15, 20, 26 and 30.” Furthermore, although the
    parties cite to the pertinent California Supreme Court
    decision, none of these claims (Claims 14L, 18, 20) are listed
    as such in that decision. If they are listed as different
    numbered claims, the parties have not so argued. “[J]udges
    are not like pigs, hunting for truffles buried in briefs.”
    Greenwood v. F.A.A., 
    28 F.3d 971
    , 977 (9th Cir. 1994)
    (quoting United States v. Dunkel, 
    927 F.2d 955
    , 956 (7th Cir.
    1991) (per curiam)). The state does not provide the clarity
    needed to reach this argument.
    Because the state has not clearly shown that these three
    claims are procedurally barred and because it appears that
    the California Supreme Court rejected the claims on their
    merits, we reject that Claims 14L, 18, and 20 are
    procedurally barred, and we elect to address the merits on
    these claims. 9
    2. We grant in part a COA.
    When a habeas petitioner seeks to initiate an appeal, the
    petitioner must obtain a COA under 
    28 U.S.C. § 2253
    (c),
    regardless of whether the petition was filed pre- or post-
    9
    We do not find that a clear showing of a procedural bar would not
    bar us from addressing the merits of a claim, but only no such showing
    was made here.
    CLARK V. CHAPPELL                              67
    AEDPA. See Slack, 
    529 U.S. at 478
    , 480–81; see also
    United States v. Martin, 
    226 F.3d 1042
    , 1045 (9th Cir. 2000).
    In pre-AEDPA cases, as here, we must consider whether the
    petitioner is entitled to a COA under AEDPA’s provisions,
    but we apply pre-AEDPA law to the merits of the petition if
    a COA is granted. See Slack, 
    529 U.S. at 482
    .
    To obtain a COA, a petitioner must make “a substantial
    showing of the denial of a constitutional right.” 
    28 U.S.C. § 2253
    (c)(2). This requires that a petitioner “demonstrate
    that the issues are debatable among jurists of reason; that a
    court could resolve the issues [in a different manner]; or that
    the questions are adequate to deserve encouragement to
    proceed further.” Lambright, 220 F.3d at 1025 (alteration in
    original) (quoting Barefoot v. Estelle, 
    463 U.S. 880
    , 893 n.4
    (1983)). Whether to grant a COA is a “threshold inquiry” to
    entertaining an appeal, and we cannot consider the merits of
    a claim until a COA has been issued on that claim. Slack,
    
    529 U.S. at 482
    ; see also Buck v. Davis, 
    137 S. Ct. 759
    , 773
    (2017); Miller-El v. Cockrell, 
    537 U.S. 322
    , 336 (2003).
    Clark has raised ten uncertified claims in his opening
    brief on appeal, as permitted under our rules. See 9th Cir. R.
    22-1(e). We treat Clark’s discussion of an uncertified issue
    as a request to expand our grant of a COA. United States v.
    Blackstone, 
    903 F.3d 1020
    , 1028 (9th Cir. 2018). Because
    Clark has not made “a substantial showing of the denial of a
    constitutional right,” 
    28 U.S.C. § 2253
    (c)(2), for Claims 8,
    14F, and 15B, we deny a COA on these claims. 10 However,
    10
    Clark argues that Claim 22 (the use of Dr. Mayland’s testimony
    from the pre-trial suppression hearing violated Clark’s right against self-
    incrimination) should be certified because it is inextricably related to
    certified Issue 3. Because Clark does not make arguments regarding
    self-incrimination in his discussion of Issue 3 in his opening brief, this
    68                    CLARK V. CHAPPELL
    Clark has met this threshold standard for Claims 5, 6, 11,
    14L, 18, 20, and 36, and we grant a COA for these claims.
    For the reasons below, we deny the claims on their merits.
    3. Claims 5 and 6: We deny Clark’s claims that
    trial counsel had conflicts of interest that
    adversely affected Clark’s representation.
    Clark argues that trial counsel had a conflict of interest
    based on: (1) Public Defender Susan Massini representing
    Clark while she was running for District Attorney; and
    (2) Public Defender Ronald Brown or his office previously
    represented a large number of prosecution and potential
    defense witnesses. Clark argues, in particular, that these
    conflicts deprived him of effective assistance of counsel
    because there were several plausible alternative defense
    strategies that were foreclosed due to the alleged conflicts of
    interest.
    On direct appeal, the California Supreme Court rejected
    Clark’s conflict of interest arguments in a reasoned opinion.
    Clark, 
    857 P.2d at
    1130–31. Quoting Cuyler v. Sullivan,
    
    446 U.S. 335
    , 348 (1980), the court determined that because
    Clark did not raise any objection to Massini’s representation,
    Clark must “demonstrate that an actual conflict of interest
    adversely affected his lawyer’s performance.” Clark,
    
    857 P.2d at 1126
    . First, the state court found no actual
    conflict: “we do not find that Massini’s personal interest in
    winning the election for district attorney threatened her
    loyalty to defendant.” 
    Id. at 1127
    . Second, the state court
    found Massini’s alleged conflict did not adversely affect her
    argument is unavailing. Clark does not otherwise discuss or appeal
    Claim 22. Accordingly, we reject Clark’s attempt to incorporate Claim
    22 into Issue 3.
    CLARK V. CHAPPELL                      69
    representation of Clark because Allen was co-counsel during
    Massini’s campaign, Allen did not have a conflict, and Allen
    was not an employee of Massini. 
    Id. at 1128
    . The state court
    also rejected Clark’s argument that there was an adverse
    effect based on Massini’s failure to adequately advocate for
    the suppression of evidence pre-trial. 
    Id.
     The state court
    further found that the trial court did not commit error in
    violation of Wood v. Georgia, 
    450 U.S. 261
     (1981), which
    requires the trial court to inquire about the alleged conflict
    and to obtain a knowing and intelligent waiver from the
    defendant. Clark, 
    857 P.2d at 1129
    .
    Addressing Clark’s allegations that Brown had a conflict
    of interest, the California Supreme Court concluded that
    there was no actual or potential conflict in the Public
    Defender’s Office’s representation of witnesses Smith,
    Boyd, and Dino, and no adverse effect on Clark’s
    representation. 
    Id. at 1130
    . Brown represented to the court
    that he possessed no confidential information relating to any
    of these three witnesses. 
    Id. at 1131
    . Brown and Allen each
    attested that the cross-examination of these witnesses would
    not be affected by the Public Defender’s Office’s prior
    representations of these witnesses. 
    Id.
     The court found that
    Brown had no interest in shielding these witnesses from
    impeachment. 
    Id.
    The California Supreme Court did, however, find
    Brown’s representation of Williams “more troubling”
    because Brown personally represented Williams and
    possessed confidential information from their attorney-client
    relationship. 
    Id. at 1131
    . Brown represented Williams on
    charges of receiving stolen property in February 1986—
    before Brown became the Public Defender and co-counsel
    on Clark’s case. 
    Id.
     The court found that there was an actual
    conflict but it did not adversely affect the representation of
    70                  CLARK V. CHAPPELL
    Clark because (1) Brown terminated representation of
    Williams; (2) Brown and Allen each made sworn
    representations to the court that Brown did not disclose to
    Allen any confidential information from Brown’s
    representation of Williams; and (3) only co-counsel Allen
    conducted the cross-examination of Williams. 
    Id.
    The district court, agreeing with the California Supreme
    Court, found that Clark failed to show actual conflict
    because he could not establish that Massini’s political
    agenda adversely affected her performance. The district
    court also found that Clark waived his conflict claims against
    Brown, and even if the claims were valid, he failed to make
    a colorable claim that the alleged conflicts adversely affected
    counsel’s performance.
    Ordinarily, a petitioner claiming ineffective assistance of
    counsel must show under Strickland both deficient
    performance and prejudice. See supra Part IV(B)(1) and
    (B)(3)(b). But the Supreme Court in Mickens prescribes “an
    exception to this general rule” where prejudice is presumed,
    when there is an “actual conflict of interest.” Mickens,
    
    535 U.S. at 166, 171
    . The Court defined “an actual conflict
    of interest” to mean “precisely a conflict that affected
    counsel’s performance—as opposed to a mere theoretical
    division of loyalties[,]” which is a two-step inquiry that a
    defendant must show a conflict of interest and that the
    conflict actually affected counsel’s performance. 
    Id. at 171
    .
    a. Massini: No Actual Conflict
    Clark argues that Massini’s election to District Attorney
    created a conflict of interest that deprived him of effective
    assistance of counsel. Future employment plans do not alone
    CLARK V. CHAPPELL                           71
    create an “actual conflict.” 11 Garcia, 
    33 F.3d at
    1198–99
    (future job with the prosecutor’s office); see also Maiden v.
    Bunnell, 
    35 F.3d 477
    , 480–81 (9th Cir. 1994) (finding that
    crossing the line from prosecution to defense does not
    necessarily create a conflict of interest); United States v.
    Unruh, 
    855 F.2d 1363
    , 1379 (9th Cir. 1987) (holding that
    defense counsel’s application for employment as an
    Assistant United States Attorney did not constitute an actual
    conflict).
    Thus, Massini’s future employment as the District
    Attorney did not by itself create an actual conflict. Clark has
    not specified how Massini’s political agenda adversely
    affected her representation of Clark. Rather, he offers only
    general criticisms: Massini did “not interview a single
    witness”; she “hid her conflict from Mr. Clark;” and “closely
    controlled the case to protect her electoral position.” The
    record, however, does not support Clark’s assertions.
    Massini, recognizing her own inexperience on capital
    defense, requested that Allen, an experienced capital defense
    attorney, join the case. Allen, who was not associated with
    the Public Defender’s Office, joined as co-counsel, almost
    five months before voir dire began. Allen attested to the
    state court that he did not have any conflicts with witnesses.
    See Burger v. Kemp, 
    483 U.S. 776
    , 784 (1987) (“[W]e
    generally presume that the lawyer is fully conscious of the
    overarching duty of complete loyalty to his or her client.”).
    Allen zealously advocated for Clark with an extensive
    defense throughout trial and a substantial presentation of
    mitigating evidence at the penalty phase. Nothing in the
    record suggests that Massini allowed her possible election to
    11
    Once Massini became the District Attorney, her office was
    recused in this case and replaced by the Attorney General, so Clark’s
    claim is necessarily premised on Massini’s future employment.
    72                     CLARK V. CHAPPELL
    affect her representation of Clark. We therefore find that
    Clark fails to establish that Massini running for District
    Attorney was more than “a mere theoretical division of
    loyalties.” Mickens, 
    535 U.S. at 171
    .
    b. Brown: No Adverse Effect
    Clark argues that Brown’s representation of witnesses
    created a conflict of interest that foreclosed Brown’s ability
    to present sufficient evidence to support plausible,
    alternative defense theories. In particular, Clark contends
    that Brown could not (a) rebut the jailhouse report;
    (b) establish that heavy drug use caused Clark to suffer a
    rage reaction and/or to blackout; and (c) assert a “third party
    defense” that Dino was also involved in the murder.
    Conflicts of interest can arise from concurrent
    representation of clients in separate matters. See Mickens,
    
    535 U.S. at 175
    . But Clark must show that Brown “actively
    represented conflicting interests,” Earp, 431 F.3d at 1182–
    83 (emphasis added) (quoting Mickens, 
    535 U.S. at 166
    ), and
    that Brown “was influenced in his basic strategic decisions
    by the [conflicted] interests.” Mickens, 
    535 U.S. at 170
    (quoting Wood, 
    450 U.S. at 272
    ).
    First, Clark’s argument concerning the jailhouse report
    is not persuasive. 12 The evidence that Clark relies on—
    declarations by two inmates and a corrections officer opining
    favorably on Clark’s character—fails to establish an actual
    conflict that affected counsel’s performance. Although
    Inmate Brackett’s 1998 declaration states that Brown
    12
    See also infra Part IV(C)(7) addressing Clark’s argument that his
    trial counsel provided ineffective assistance of counsel for failing to
    rebut the jailhouse report (Claim 14L).
    CLARK V. CHAPPELL                     73
    represented him in 1985, the record is silent on any further
    supporting evidence and Clark does not demonstrate an
    actual conflict.      Furthermore, although Investigator
    McPherson’s 2005 declaration states that he “could not
    interview the inmates who reported this because they were
    Public Defender clients,” he does not specify that Brown
    directly represented the inmates during Clark’s trial. The
    record does not support an actual conflict of Brown with the
    inmates named in the report—Barella, Hull, Brackett, and
    Strobridge. Clark fails to establish an actual conflict, let
    alone that Brown’s role as the public defender affected his
    representation of Clark.
    Second, we also reject Clark’s argument that Brown’s
    and the Public Defender’s Office’s prior representation of
    the prosecution witnesses prevented the defense from
    impeaching the prosecution witnesses or calling potential
    defense witnesses. The defense’s case revolved around the
    theory that Clark’s heavy drug use caused him to suffer a
    “rage reaction,” thus negating the requisite mens rea. Clark
    claims that the testimony of certain prosecution witnesses—
    Williams, Smith, Dino, and Boyd—minimized the defense’s
    theory of heavy drug use, thus adversely affected Clark’s
    representation.
    Although Brown’s personal representation of Williams
    created a conflict, as Brown concurrently represented
    Williams and Clark, nothing in the record indicates that the
    conflict adversely affected Clark’s representation. Rather,
    Brown took steps to eliminate any adverse effect: Brown
    terminated representation of Williams; Brown and Allen
    each attested that Brown did not disclose to Allen any
    confidential information from Brown’s representation of
    Williams; and only co-counsel Allen conducted the cross-
    examination of Williams. The record does not indicate that
    74                  CLARK V. CHAPPELL
    Brown was influenced in his basic strategic decisions by his
    representation of Williams.
    The Public Defender’s Office represented witnesses
    Smith, Dino, and Boyd, but Brown did not personally
    represent them. Clark argues that these witnesses’ extensive
    involvement with the criminal justice system with their own
    convictions and charges prevented the defense team from
    impeaching them and that these witnesses minimized or
    denied Clark’s drug use and its effects. These arguments are
    meritless in the context of the entire defense case that
    extensively stressed Clark’s heavy drug use. Furthermore,
    Brown represented to the court that he possessed no
    confidential information relating to any of these three
    witnesses, and both Brown and Allen each represented to the
    court that the cross-examination of these witnesses would
    not be affected by the Public Defender’s Office’s prior
    representations of these witnesses. See Holloway v.
    Arkansas, 
    435 U.S. 475
    , 485 (1978) (“An ‘attorney
    representing two defendants in a criminal matter is in the
    best position professionally and ethically to determine when
    a conflict of interest exists or will probably develop in the
    course of a trial.’” (quoting State v. Davis, 
    514 P.2d 1025
    ,
    1027 (Ariz. 1973)); see also Alberni v. McDaniel, 
    458 F.3d 860
    , 870 (9th Cir. 2006). Clark has failed to establish that
    any alleged conflict with witnesses adversely affected
    Clark’s representation.
    Third, Clark’s assertion that Dino Stevens’s pending
    charges created “multiple, interlocking conflicts” is not
    persuasive. Brown did not personally represent Dino;
    Brown represented to the court that he possessed no
    confidential information relating to Dino; and both Brown
    and Allen each represented to the court that the cross-
    examination of Dino would not be affected by the Public
    CLARK V. CHAPPELL                       75
    Defender’s Office’s prior representations of Dino. Clark
    fails to articulate more than “a mere theoretical division of
    loyalties.” Mickens, 
    535 U.S. at 171
    .
    We conclude that Clark has not established any actual
    conflict of interest that adversely affected trial counsel’s
    representation of Clark, and thus we deny habeas relief on
    Claims 5 and 6.
    4. Claim 8: We deny a COA on Clark’s claim that
    trial counsel was ineffective for failing to
    challenge the methamphetamine drug level
    testimony.
    Clark argues that trial counsel rendered ineffective
    assistance of counsel by failing to challenge the
    methamphetamine drug level testimony offered at trial. In
    particular, Clark asserts that trial counsel did not consult
    with an independent forensic toxicologist about the effect of
    the drug levels on Clark nor investigate the collection,
    storage, transportation, and analysis of the blood sample.
    However, the jointly-hired forensic toxicologist testified
    to the low level of drugs in Clark’s blood and another
    defense expert testified that any debilitating effect could not
    be determined due to the low levels. We conclude that Clark
    has not demonstrated that this claim raises “questions [that]
    are adequate to deserve encouragement to proceed further.”
    Lambright, 220 F.3d at 1025 (quoting Barefoot, 
    463 U.S. at
    893 n.4). Because Clark cannot make “a substantial
    showing of the denial of a constitutional right,” 
    28 U.S.C. § 2253
    (c)(2), we therefore deny Clark’s request for a COA
    on Claim 8 and do not address the merits of this claim.
    76                      CLARK V. CHAPPELL
    5. Claim 11: We deny Clark’s claim that trial
    counsel was ineffective for failing to present life
    history evidence at the penalty phase.
    Clark argues that his trial counsel provided ineffective
    assistance at the penalty phase by failing to investigate,
    prepare, and present more evidence about Clark’s life
    history. 13 Specifically, Clark contends that his trial counsel
    failed to present additional mitigating evidence regarding:
    (1) Clark’s genetic predisposition for depression and
    substance abuse; (2) Clark’s father’s violence toward
    Clark’s mother, Clark, and his siblings; (3) Clark’s mother’s
    drinking problem, abandonment, and physical abuse of her
    children; (4) Clark’s longstanding learning disability;
    (5) Clark’s longstanding mental health issues; and (6) the
    nature and extent of Clark’s drug use. In support of these
    arguments, Clark relies on post-conviction declarations of
    psychologist Dr. Sanislow, defense mental health experts
    Drs. Roberts and Raffle, and other experts, to give a more
    detailed account of Clark’s life history than provided during
    trial. Clark argues that this additional information would
    have “paint[ed] a much more sympathetic picture.”
    To assess Clark’s claim, we must take into account the
    substantial life history evidence Clark’s counsel did present
    at the penalty phase. Clark’s trial counsel presented to the
    jury extensive testimony that Clark’s mother developed a
    drinking problem and abandoned her children, leaving the
    home in extreme disrepair and Clark to care for his younger
    siblings until Clark was ultimately placed in foster care. See
    Clark, 
    857 P.2d at
    1145–46. Counsel presented evidence
    13
    See supra Part IV(B)(5) for the portion of Claim 11 (Issue 5) that
    addresses Clark’s argument that trial counsel was ineffective for failing
    to investigate Clark’s traumatic birth and its effects.
    CLARK V. CHAPPELL                        77
    that Clark’s mother beat her children with Hot Wheels tracks
    and other items. Also, counsel proffered evidence about
    Clark’s longstanding learning disability with reading,
    including testimony from one of his special education
    teachers. See id.
    In addition, counsel investigated and presented evidence
    during both the guilt and penalty phases about Clark’s
    longstanding mental health issues. See id. at 1145. Clark’s
    family members and a county counselor who had treated
    Clark’s family testified that Clark was severely and
    chronically depressed and withdrawn following the death of
    his father when Clark was twelve years old.
    Counsel also presented testimony about Clark’s drug use
    at both the guilt and penalty phases. Clark began
    experimenting with drugs and alcohol around the age of
    twelve following the death of his father and started regularly
    using harder drugs like methamphetamine within the year
    before the murder. Counsel showed the jury that blood tests
    supported that Clark had a “high therapeutic” or “low abuse”
    amount of methamphetamine at the time of the murder. Id.
    at 1114.
    Clark’s counsel, though, did not present all of Clark’s
    life history evidence. As the state acknowledges, the defense
    did not present evidence that Clark was genetically
    predisposed to mental illness and substance abuse based on
    his family background. Additionally, it appears that the
    defense did not present to the jury that as part of his
    depression, Clark was self-destructive (e.g., electrocuting
    himself by putting his hand in the toaster). Clark concedes
    on appeal, though, that counsel proffered evidence to the
    jury that Clark attempted suicide a few months before
    Grover’s murder.         Clark contends that the evidence
    presented at trial relating to his drug use failed to capture the
    78                  CLARK V. CHAPPELL
    “degree” of his escalating methamphetamine addiction and
    “its effect on his functioning” leading up to and at the time
    of Grover’s murder.
    Also, Clark’s father’s violence towards his children was
    not presented at trial. The jury heard that Clark’s father was
    an alcoholic, that he beat Clark’s mother, and that she got a
    restraining order against him. Clark’s mother testified at the
    penalty phase that Clark’s father was “[v]erbally” abusive
    with his children “when he was drinking.” But the jury did
    not hear that Clark’s father also physically abused his
    children. For example, the jury was not informed that
    Clark’s drunken father first struck Clark at eight months old,
    or that he frequently beat Clark and his brother. Further,
    although counsel generally proffered evidence that Clark’s
    father “physically abused” or “beat” Clark’s mother, counsel
    did not present the details, including that he raped her, which
    prompted her to finally leave him when Clark was about ten
    years old.
    However, most of the additional mitigating evidence that
    Clark argues should have been presented is cumulative of the
    evidence presented during the guilt and penalty phases.
    Although additional evidence of Clark’s early childhood and
    Clark’s father’s violence could have been presented, Allen
    proffered extensive evidence to illustrate that Clark suffered
    a traumatic, abusive childhood and experienced its effects on
    his development, mental health, and substance use. See also
    supra Part IV(B)(5). The record supports our finding that
    Allen’s presentation of Clark’s life history evidence during
    the guilty and penalty phases was adequate under 1987
    standards and not objectively unreasonable. See Hamilton,
    
    583 F.3d at 1129
     (“As the Supreme Court has long
    recognized, the ABA Standards for Criminal Justice provide
    guidance as to what constitutes a ‘reasonable’ performance.”
    CLARK V. CHAPPELL                      79
    (quoting Strickland, 
    466 U.S. at
    688–89)).           Clark’s
    objections that Allen should have presented more life history
    evidence are more akin to “[m]ere criticism of a tactic or
    strategy.” Gustave, 
    627 F.2d at 904
    .
    We, therefore, conclude that Clark has not shown that
    trial counsel’s presentation of life history evidence was
    deficient. 14 We deny habeas relief on Claim 11.
    6. Claim 14F: We deny a COA on Clark’s claim
    that trial counsel was ineffective for failing to
    challenge pathologist and criminalist testimony.
    Clark argues that trial counsel provided ineffective
    assistance of counsel by failing to challenge the state’s
    pathologist and criminalist testimony.            The state’s
    pathologist testified that, after Clark choked Grover, she was
    alive and breathing at the time of the stabbing and of the
    blunt force blows to her head and neck. Clark argues that
    this conclusion was incorrect because there was no evidence
    of aspirated blood. Clark also argues that the pathologist’s
    testimony and the prosecution’s closing argument
    incorrectly implied sodomy of the victim. In essence, Clark
    argues that the sequence of events leading to Grover’s death
    was misrepresented at trial and that she was unconscious or
    already dead prior to the administration of blunt force.
    Clark, however, does not dispute that he choked Grover,
    stabbed her with a screwdriver, and threw concrete blocks
    on her head. Because Clark fails to show that the relevance
    of when Grover died is “debatable among jurists of reason,”
    Lambright, 220 F.3d at 1025 (quoting Barefoot, 
    463 U.S. 14
    However, even if we determined that Clark could show
    deficiency, Clark has not shown prejudice.
    80                   CLARK V. CHAPPELL
    at 893 n.4), he cannot make “a substantial showing of the
    denial of a constitutional right,” 
    28 U.S.C. § 2253
    (c)(2). We
    deny Clark’s request for a COA on Claim 14F, and do not
    address the merits of this claim.
    7. Claim 14L: We deny Clark’s claim that trial
    counsel was ineffective for failing to rebut the
    jailhouse report.
    Clark argues that trial counsel provided ineffective
    assistance for failing to rebut the jailhouse report that
    indicated that Clark had a “cocky attitude” by presenting
    evidence during the penalty phase of Clark’s remorse and
    positive adjustment to prison.
    Clark’s argument that any reasonable counsel, given the
    powerful mitigation of remorse and positive adjustment to
    prison, would have rebutted the jailhouse report is
    unconvincing. In support of his arguments, Clark relies on
    post-conviction declarations from two of the inmates named
    in the jailhouse report that indicated statements in the report
    were false, and from a corrections officer who “spoke with
    other officers who knew [Clark] and his reputation in the jail
    [as] one of being peaceful, obedient, and non-violent.”
    Counsel, however, presented extensive mitigating
    evidence at the penalty phase, including 23 witnesses who
    testified to Clark’s character. See supra Parts IV(B)(5) and
    IV(C)(5). To insist that counsel should have presented
    additional evidence that Clark was “remorseful,” amounts to
    “[m]ere criticism of a tactic or strategy [that] is not in itself
    sufficient to support a charge of inadequate representation.”
    Gustave, 
    627 F.2d at 904
    . Allen proffered extensive
    mitigating evidence on Clark’s behavior as a protective older
    brother to his younger sister, a caregiver to his paraplegic
    friend, a considerate person who would break up fights as a
    CLARK V. CHAPPELL                      81
    teenager, a reliable worker with a good attitude in his jobs,
    and a non-rowdy, good person as a tenant. The post-
    conviction evidence that Clark argues should have been
    presented did not exist at the time of the trial. At most, the
    evidence developed post-conviction suggests that Allen
    could have taken a different tactic during the penalty phase
    but does not suggest that Allen’s presentation of mitigating
    evidence on Clark’s behavior was objectively unreasonable.
    We conclude that Allen’s performance was not deficient, 15
    and we therefore deny habeas relief on Claim 14L.
    8. Claim 15B: We deny a COA on Clark’s claim
    that habeas relief is warranted under Batson v.
    Kentucky because the prosecutor discriminatorily
    used its peremptory challenges.
    Clark argues that he was denied his rights to equal
    protection and due process by the prosecution’s
    discriminatory use of peremptory challenges to exclude
    prospective jurors based on their race. See Batson v.
    Kentucky, 
    476 U.S. 79
     (1986). Specifically, Clark argues
    that the prosecutor exercised five preemptory challenges to
    remove all but one of the Latino prospective jurors.
    However, defense counsel conceded during trial that the
    prosecutor offered race-neutral reasons that met the
    prosecution’s Batson burden. Clark therefore fails to
    establish that this claim is “debatable among jurists of
    reason,” Lambright, 220 F.3d at 1025 (quoting Barefoot,
    
    463 U.S. at
    893 n.4), and thus does not make “a substantial
    showing of the denial of a constitutional right,” 28 U.S.C.
    15
    However, even if we determined that Clark could show
    deficiency, Clark has not shown prejudice.
    82                   CLARK V. CHAPPELL
    § 2253(c)(2). We deny Clark’s request for a COA on Claim
    15B and do not address the merits of this claim.
    9. Claim 18: We deny Clark’s claim that he was
    denied his constitutional right to be present for
    critical stages of the proceedings.
    Clark argues that he was denied his Sixth Amendment
    right to be present at two meetings regarding possible
    conflicts of interest with counsel: (a) an “off-the-record”
    meeting on February 7, 1986, between the state court and
    counsel to discuss Massini’s candidacy for District Attorney;
    and (b) an “in-chambers conversation” regarding the
    admissibility at trial of Dr. Mayland’s testimony from the
    pre-trial suppression hearing.
    The right to a public trial under the Sixth Amendment,
    “taken together with the right to due process, includes a right
    of . . . defendant[] and [his] counsel to be present at all stages
    of the trial from arraignment to verdict and discharge of the
    jury.” Polizzi v. United States, 
    550 F.2d 1133
    , 1137 (9th Cir.
    1976) (concluding that a defendant’s presence was not
    required during the judge’s questioning of the jurors after the
    verdict). This right, however, “is not absolute.” 
    Id.
     The
    defendant “has a due process right ‘to be present in his own
    person whenever his presence has a relation, reasonably
    substantial, to the fulness of his opportunity to defend
    against the charge.’” Kentucky v. Stincer, 
    482 U.S. 730
    , 745
    (1987) (quoting Snyder v. Massachusetts, 
    291 U.S. 97
    , 105–
    06 (1934), overruled in part by Malloy v. Hogan, 
    378 U.S. 1
    (1964)). However, it is not a guaranteed right “when
    presence would be useless, or the benefit but a shadow,” id.
    at 745 (quoting Snyder, 
    291 U.S. at
    106–07), or when the
    defendant “could have done nothing had [he] been at the
    conference, nor would [he] have gained anything by
    attending,” United States v. Gagnon, 
    470 U.S. 522
    , 527
    CLARK V. CHAPPELL                       83
    (1985) (per curiam) (concluding that a defendant’s presence
    was not required at an in camera discussion between the
    judge and a juror). “Thus, a defendant is guaranteed the right
    to be present at any stage of the criminal proceeding that is
    critical to its outcome if his presence would contribute to the
    fairness of the procedure.” Stincer, 
    482 U.S. at 745
    . The
    “exclusion of a defendant from a trial proceeding should be
    considered in light of the whole record.” Gagnon, 
    470 U.S. at
    526–27.
    We reject Clark’s argument that, if he were present at the
    meeting about Massini’s conflict, he would have insisted on
    a full hearing and removal of counsel. The discussions at
    this meeting were later described by defense counsel in open
    court for the trial judge in Clark’s presence, and Clark made
    no objections or requests for a further hearing. Moreover,
    when the conflicts were explained to Clark, he stated on the
    record that he wanted Brown and Allen to continue to
    represent him. Clark therefore has not shown that he would
    “have gained anything by attending.” Gagnon, 
    470 U.S. at 527
    .
    We also are unpersuaded by Clark’s argument that his
    constitutional right was infringed by being excluded from
    the in-chambers conference regarding the admissibility of
    Dr. Mayland’s pre-trial testimony. Clark asserts that this
    meeting constituted a critical stage because “it was there that
    counsel believed he had extracted a promise the statements
    could not be used,” and Clark had expressly stated that he
    did not wish for these statements to come before the jury.
    But defense counsel believed that the judge ruled favorably
    for the defense at the in-chambers conference by excluding
    Dr. Mayland’s testimony at trial. See supra Part IV(B)(3).
    Moreover, on direct appeal, the California Supreme Court
    found that the in-chambers conference concerned “the length
    84                  CLARK V. CHAPPELL
    of time for a hearing and the possible defense witnesses to
    be called,” which did “not implicate defendant’s opportunity
    to defend himself.” Clark, 
    857 P.2d at 1138
    . Clark has not
    explained how he could have done anything differently or
    what he would have gained had he been at the in-chambers
    conference. Cf. Gagnon, 
    470 U.S. at
    526–27. We thus find
    that Clark has not demonstrated that his constitutional right
    to be present was infringed.
    We conclude that Clark has not explained how his
    presence at these two meetings had a reasonably “substantial
    relationship” to his ability to defend himself, Stincer,
    
    482 U.S. at 746
    , and we deny habeas relief on Claim 18.
    10. Claim 20: We deny Clark’s claim that habeas
    relief is warranted under Brady v. Maryland
    because the state failed to disclose the Manda
    Report and the prosecutor’s interview notes.
    Clark argues that the prosecution failed to disclose two
    pieces of exculpatory evidence: (a) the Manda Report and
    (b) the prosecutor’s interview notes from a conversation with
    the officers regarding Clark’s confession in the patrol car.
    a. The Manda Report
    Under Brady, “suppression by the prosecution of
    evidence favorable to an accused . . . violates due process
    where the evidence is material either to guilt or to
    punishment.” 
    373 U.S. at 87
    ; see supra Part IV(B)(6)(b).
    The petitioner must show that “there is a reasonable
    probability that, had the evidence been disclosed to the
    defense, the result of the proceeding would have been
    different.” Reis-Campos, 832 F.3d at 975 (quoting Bagley,
    
    473 U.S. at 682
    ).
    CLARK V. CHAPPELL                      85
    Clark argues that he was prejudiced by the prosecution’s
    failure to disclose the coroner’s report prepared by Deputy
    Manda (Manda Report) because it would have contradicted
    the officers’ testimony. At the preliminary hearing,
    suppression hearing, and trial, Detectives Kelley and Gall
    testified that they learned of Grover’s several stab wounds to
    her back after Clark’s patrol car confession. Clark argues
    that Detective Gall’s testimony that he went to the mortuary
    and learned of the stab wounds at approximately 2:00 p.m.
    would have been contradicted by the Manda Report, which
    indicates that Detective Gall viewed the stab wounds at the
    mortuary prior to 11:00 a.m., which occurred before Clark’s
    patrol car confession. Clark argues that he knew of the stab
    wounds only because the officers had told him, which would
    have supported his drug-induced blackout and rage reaction
    theories and would have refuted the prosecution’s
    characterization during the penalty phase that Clark was a
    sociopathic liar.
    Even if the Manda Report supported the possibility that
    the officers could have told Clark that Grover had been
    stabbed in the back, there is nothing in the Manda Report
    suggesting that the officers knew that the weapon was a
    screwdriver. The screwdriver, which bore traces of human
    blood, was not found in David Smith’s car until
    approximately a week after the murder. Therefore, Clark’s
    statement in the patrol car that he had stabbed Grover several
    times with “what appeared to be a screwdriver, just the metal
    shaft part” had to be based on his personal knowledge, and
    could not have come from the officers.
    86                      CLARK V. CHAPPELL
    In addition, testimony by Michelle Stevens undermines
    Clark’s claim. 16 Michelle testified that when Clark returned
    to the house early in the morning after the murder, Clark told
    her that he had found the body of a teenage girl. Michelle
    testified that Clark told her the girl’s head was swollen and
    it looked like she had been raped and “stabbed by something
    like a screwdriver.” Clark’s conversation with Michelle
    occurred before Clark’s meeting with Detectives Kelley and
    Gall. Clark argues that Michelle’s testimony is unreliable
    and that she did not mention the screwdriver when
    interviewed by officers that morning. But Michelle’s
    testimony nonetheless suggests that Clark had personal
    knowledge that Grover was stabbed with a screwdriver.
    Thus, the Manda Report would not have undermined the
    prosecution’s argument that Clark had personal knowledge
    that Grover had been stabbed and that Clark did not learn
    this information from the officers.
    We therefore conclude that there is not a “reasonable
    probability that . . . the result of the proceeding would have
    been different” if the Manda Report had been disclosed to
    the defense. Reis-Campos, 832 F.3d at 975 (quoting Bagley,
    
    473 U.S. at 682
    ).
    b. Prosecutor’s Interview Notes
    Clark also argues that the prosecution withheld interview
    notes by Deputy District Attorney Robert Hickok that
    contradicted the testimony of Detectives Kelley and Gall that
    Clark was calm during his patrol car confession. The notes
    indicate that the officers told Hickok that the reason for
    Detective Gall’s response to Clark’s 30-years question was
    16
    Michelle was unavailable to testify at trial, so the parties agreed
    that her preliminary hearing testimony would be read to the jury.
    CLARK V. CHAPPELL                     87
    “we were attempting to consol [sic] [Clark] at that time,
    cooling out the situation so that he wouldn’t ‘freak out’ at
    the hospital.” Clark argues that the notes support that Clark
    was in distress at the time of his patrol car confession and
    that Detective Gall’s 30-years statement was a promise to
    Clark of leniency. Clark asserts that the disclosure of the
    notes would have led to the suppression of his patrol car
    confession, and without the patrol car confession, the
    prosecution would not have been able to use it to undermine
    his taped statement that he had blacked out during the
    murder. We disagree.
    Clark fails to show a reasonable probability that the
    result of trial would have been different. His taped
    confession would still be admissible, in which he admitted
    to choking Grover, “bashing one rock into her,” and
    “throwing a piece of metal” that “looked like an old broken
    screwdriver” after she “said she was going to cry rape.” He
    also admitted that after the murder he changed his clothes
    and pretended to find the body as a cover up. Given the
    overwhelming evidence against Clark, the prosecutor’s
    notes would not have changed the jury’s rejection of Clark’s
    claim that he had blacked out during the murder. We
    therefore conclude that Clark has not shown, even if the
    prosecutor’s notes were disclosed to the defense, that there
    is “a probability sufficient to undermine confidence in the
    outcome.” Reis-Campos, 832 F.3d at 975 (quoting Bagley,
    
    473 U.S. at 682
    ).
    We thus deny habeas relief on Claim 20.
    88                  CLARK V. CHAPPELL
    11. Claim 36: We deny Clark’s claim that habeas
    relief is warranted because cumulative errors
    denied Clark’s right to a fair trial.
    Finally, Clark argues that his habeas claims must be
    analyzed for cumulative error. “Although individual errors
    looked at separately may not rise to the level of reversible
    error, their cumulative effect may nevertheless be so
    prejudicial as to require reversal.” United States v.
    Necoechea, 
    986 F.2d 1273
    , 1282 (9th Cir. 1993). “In
    reviewing for cumulative error, the court must review all
    errors preserved for appeal and all plain errors.” 
    Id.
     “[T]he
    combined effect of multiple trial court errors violates due
    process where it renders the resulting criminal trial
    fundamentally unfair.” Parle v. Runnels, 
    505 F.3d 922
    , 927
    (9th Cir. 2007); see also Chambers v. Mississippi, 
    410 U.S. 284
    , 302 (1973). Cumulative error warrants habeas relief
    where the errors “so infected the trial with unfairness,”
    Donnelly v. DeChristoforo, 
    416 U.S. 637
    , 643 (1974), as to
    have a “substantial and injurious effect or influence in
    determining the jury’s verdict,” Brecht v. Abrahamson,
    
    507 U.S. 619
    , 637 (1993) (citation omitted).
    In analyzing all of Clark’s claims on appeal, we conclude
    that cumulative error does not warrant reversal. Given the
    overwhelming evidence against Clark at trial, any error that
    may have occurred did not infect the trial with unfairness.
    We deny habeas relief on Claim 36.
    V. CONCLUSION
    We AFFIRM the district court’s denial of habeas corpus
    relief on Issues 1, 3, 4, 5, and 6. We VACATE the district
    court’s denial of habeas corpus relief on Issue 2, and we
    REMAND to the district court for the limited purpose to
    CLARK V. CHAPPELL                   89
    reconsider Issue 2 in light of our decision in Godoy v.
    Spearman, 
    861 F.3d 956
     (9th Cir. 2017) (en banc).
    We extend a COA to Claims 5, 6, 11, 14L, 18, 20 and 36,
    and we DENY habeas corpus relief on these claims. We
    DENY a COA on Claims 8, 14F, and 15B.