Cary Williams v. Timothy Filson , 908 F.3d 546 ( 2018 )


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  •                FOR PUBLICATION
    UNITED STATES COURT OF APPEALS
    FOR THE NINTH CIRCUIT
    CARY WALLACE WILLIAMS,                  No. 13-99002
    Petitioner-Appellant,
    D.C. No.
    v.                     2:98-cv-00056-
    PMP-VCF
    TIMOTHY FILSON, Warden; ADAM
    PAUL LAXALT, Attorney General,
    Respondents-Appellees.
    Appeal from the United States District Court
    for the District of Nevada
    Philip M. Pro, District Judge, Presiding
    CARY WALLACE WILLIAMS,                  No. 17-15768
    Petitioner-Appellant,
    D.C. No.
    v.                     2:98-cv-00056-
    APG-VCF
    TIMOTHY FILSON, Warden; ADAM
    PAUL LAXALT, Attorney General,
    Respondents-Appellees.
    Appeal from the United States District Court
    for the District of Nevada
    Andrew P. Gordon, District Judge, Presiding
    2                 WILLIAMS V. FILSON
    CARY WALLACE WILLIAMS,                    No. 17-71510
    Petitioner,
    v.                         OPINION
    TIMOTHY FILSON, Warden; ADAM
    PAUL LAXALT, Attorney General of
    the State of Nevada,
    Respondents.
    Application to File Second or Successive Petition
    Under 28 U.S.C. § 2254
    Argued and Submitted September 20, 2017
    San Francisco, California
    Filed November 9, 2018
    Before: Marsha S. Berzon, Paul J. Watford,
    and John B. Owens, Circuit Judges.
    Opinion by Judge Watford
    WILLIAMS V. FILSON                              3
    SUMMARY*
    Habeas Corpus / Death Penalty
    The panel affirmed in part and reversed in part the district
    court’s denial of Cary Williams’ first federal habeas corpus
    petition challenging his Nevada murder conviction and death
    sentence, and remanded for an evidentiary hearing on one of
    Williams’ penalty-phase ineffective assistance of counsel
    claims; affirmed the district court’s denial of his motion for
    relief under Fed. R. Civ. P. 60(b); and denied Williams’
    application to file a second or successive federal habeas
    petition.
    The panel held that Williams is entitled to equitable
    tolling between the date of the one-year AEDPA deadline for
    filing a federal habeas petition and the date he filed his
    amended federal petition, and that all of the claims asserted
    in the amended petition are therefore timely. Because
    Williams is entitled to equitable tolling even if the claims
    asserted in the original and amended opinions do not share a
    common core of operative facts, the panel did not need to
    decide whether the district court’s application of the relation-
    back standard from Mayle v. Felix, 
    545 U.S. 644
    (2005), is
    correct. The panel remanded for further proceedings as to the
    claims the district court dismissed based solely on the
    assumed untimeliness of the amended petition.
    Applying AEDPA deference, the panel held that the
    district court did not abuse its discretion in denying an
    *
    This summary constitutes no part of the opinion of the court. It has
    been prepared by court staff for the convenience of the reader.
    4                   WILLIAMS V. FILSON
    evidentiary hearing on Williams’ claim that his trial counsel
    failed to discover and present evidence that he suffers from
    brain damage. Reviewing de novo, the panel held that the
    district court did abuse its discretion in denying a hearing on
    Williams’ claim that trial counsel unreasonably failed to
    investigate and present substantial mitigating evidence
    regarding his abusive and traumatic childhood.
    The panel held that the district court did not err by
    denying Williams’ request for an evidentiary hearing on his
    claims that trial counsel rendered ineffective assistance
    during the guilt phase by failing to prepare an adequate
    defense and during the penalty phase by failing to retain a
    medical expert who could rebut the state’s evidence that the
    murder involved torture. The panel held that the district court
    properly held that it could not consider documentary evidence
    as to the merits of those claims because Williams did not
    submit that evidence to the state courts in the manner
    required under state law. The panel rejected Williams’
    separate argument that he is entitled to have the documentary
    evidence considered under the rule subsequently established
    in Martinez v. Ryan, 
    566 U.S. 1
    (2012). The panel concluded
    that the evidence contained in the declarations at issue does
    not place these claims in a significantly different and stronger
    posture such that they must be deemed “new” claims not
    previously presented to state courts.
    The panel held that Williams’ constitutional challenges to
    Nevada’s “avoid lawful arrest” aggravating circumstance,
    Nev. Rev. Stat. § 200.033(5) (1981), lacked merit, even
    reviewing the merits de novo. The panel rejected Williams’
    contention that the aggravated circumstance is facially invalid
    under the Eighth Amendment because it is too vague and
    because it fails to adequately narrow the class of death-
    WILLIAMS V. FILSON                        5
    eligible defendants. The panel also rejected Williams’
    contention that, as applied to him, the aggravating
    circumstance violates the Ex Post Facto Clause and the
    Fourteenth Amendment’s Due Process Clause because he
    lacked adequate notice at the time he committed the offense
    that § 200.033(5) could be applied to the facts of his crime.
    The panel held that Nev. Rev. Stat. § 34.726, which
    imposes a general one-year deadline for the filing of petitions
    for post-conviction relief, is an independent and adequate
    state procedural bar to federal review. The panel therefore
    affirmed the district court’s dismissal of several of Williams’
    claims as procedurally defaulted under that statute. Because
    all of the claims asserted in Williams’ amended petition are
    timely under AEDPA, the panel reversed the district court’s
    dismissal of five ineffective-assistance claims and remanded
    for the district court to determine in the first instance whether
    Williams’ procedural default on those claims is excused
    under Martinez.
    The panel assumed without deciding that Williams’
    motion under Rule 60(b) was not a disguised second or
    successive petition. The panel wrote that Williams is not
    entitled to relief because even if Hurst v. Florida, 
    136 S. Ct. 616
    (2016), established the new rule Williams urges, that rule
    would not apply retroactively in cases on collateral review.
    The panel wrote that Williams is also not entitled to relief
    because his Rule 60(b) motion rests on the incorrect premise
    that the Nevada Supreme Court did not apply a beyond-a-
    reasonable-doubt standard when it reweighed whether
    aggravating factors outweighed a mitigating circumstance.
    The panel denied Williams’ application to file a second or
    successive petition based on Hurst.
    6                    WILLIAMS V. FILSON
    COUNSEL
    Michael Pescetta (argued), Randolph M. Fiedler, and Albert
    Sieber, Assistant Federal Public Defenders; Rene L.
    Valladares, Federal Public Defender; Office of the Federal
    Public Defender, Las Vegas, Nevada; for Petitioner-
    Appellant.
    Victor-Hugo Schulze II (argued), Senior Attorney General;
    Adam Paul Laxalt, Attorney General; Office of the Attorney
    General, Las Vegas, Nevada; for Respondents-Appellees.
    OPINION
    WATFORD, Circuit Judge:
    Cary Williams was sentenced to death for the murder of
    Katherine Carlson in 1983. This is the appeal from the
    district court’s denial of his first federal petition for a writ of
    habeas corpus. In the main appeal, we address the three
    issues on which the district court granted a certificate of
    appealability, as well as two uncertified issues that Williams
    raised in his opening brief. We affirm in part, reverse in part,
    and remand for an evidentiary hearing on one of Williams’
    penalty-phase ineffective assistance of counsel claims.
    Williams has also filed a separate appeal from the district
    court’s denial of his motion for relief under Rule 60(b) of the
    Federal Rules of Civil Procedure. We affirm the denial of
    Williams’ Rule 60(b) motion.
    WILLIAMS V. FILSON                      7
    I. Background
    A. Conviction and Sentence
    Many of the basic facts surrounding the murder of Ms.
    Carlson are no longer subject to reasonable dispute. Williams
    pleaded guilty to her murder during the guilt phase of the
    trial, and during the penalty phase he took the stand and
    described in detail how he committed the offense.
    Williams grew up in the Los Angeles area but moved to
    Reno, Nevada, in February 1982, when he was 18 years old,
    both to escape the violence prevalent in his inner-city
    neighborhood and to pursue his interest in becoming a
    professional boxer. He moved in with his boxing coach, who
    lived in a residential community called Horizon Hills.
    Williams held a job as a maintenance worker in Horizon
    Hills, a position he used to burglarize several homes in the
    community while the owners were away during the day.
    In June 1982, Ms. Carlson and her husband were a young
    couple living in Horizon Hills a few houses down the street
    from where Williams lived. Ms. Carlson worked as a nurse,
    her husband as a firefighter. Ms. Carlson was eight months
    pregnant at the time, expecting the couple’s first child.
    On the night of June 27, 1982, Williams decided to
    burglarize the Carlsons’ home. He thought they had left town
    on vacation, as the camper he had seen them packing earlier
    in the day was no longer parked outside their home. But Ms.
    Carlson was home alone, asleep in her bedroom.
    When Williams broke into the Carlsons’ home that night,
    he saw a woman’s purse on the kitchen counter, which led
    8                   WILLIAMS V. FILSON
    him to take a large butcher knife from a drawer in the kitchen.
    He then walked through the house, room to room, looking for
    things to steal. When he reached the master bedroom, he
    turned on the lights and startled Ms. Carlson. She recognized
    Williams and said, “Oh, my God, you’re the kid from down
    the street.” According to Williams, Ms. Carlson then lunged
    toward a bedside dresser, and a struggle between them ensued
    as he tried to prevent her from reaching into one of the
    drawers. Williams admitted stabbing Ms. Carlson to death
    during the course of that struggle with the butcher knife he
    had taken from the kitchen. An autopsy revealed that Ms.
    Carlson suffered 38 stab wounds in all, three of which were
    fatal. Her unborn child died due to lack of oxygen after Ms.
    Carlson’s death.
    After killing Ms. Carlson, Williams took money, jewelry,
    a camera, and a .22 caliber pistol from her home.
    The next day, Williams fled to Los Angeles by bus.
    Within a week, police in Reno had obtained a warrant for
    Williams’ arrest, tipped off by Williams’ efforts to pawn
    some of the jewelry he stole from the Carlsons’ home.
    Williams learned of the warrant, surrendered to authorities in
    Los Angeles, and was eventually extradited to Reno. When
    questioned by the police in Reno, Williams confessed to the
    burglary and to having murdered Ms. Carlson during the
    course of the burglary.
    In August 1982, the State of Nevada charged Williams
    with one count of murder for the death of Ms. Carlson, one
    count of manslaughter for the death of her unborn child, and
    one count of burglary. The case received widespread
    publicity throughout Washoe County, where Reno is located.
    The State sought the death penalty.
    WILLIAMS V. FILSON                       9
    Trial commenced in December 1982. On the first day of
    jury selection, Williams pleaded guilty to the burglary charge.
    A week later, after a jury had been empaneled and testimony
    had begun, Williams pleaded guilty to the murder and
    manslaughter charges as well. Under Nevada law at the time,
    Williams’ guilty plea to capital murder meant that the penalty
    phase of his trial would be held before a three-judge
    sentencing panel rather than a jury. Williams’ trial counsel
    believed she had a better chance of persuading judges rather
    than jurors to spare Williams’ life, given the intense public
    hostility to Williams in Washoe County at the time.
    The penalty-phase hearing took place over three days in
    January 1983. The State portrayed Williams as a depraved
    individual whose criminal conduct escalated from a series of
    home burglaries to “the most brutal, the most sadistic and
    most merciless murder ever in the history of Washoe
    County.” The State also focused attention on Williams’
    victims, introducing a photograph of a visibly pregnant Ms.
    Carlson two weeks before she was killed. Mr. Carlson
    offered detailed and emotional testimony about discovering
    his wife’s body after the murder. The State concluded by
    calling a forensic pathologist who testified that there was “no
    question this woman was tortured before she was murdered.”
    Williams’ mitigation case centered on the testimony of
    friends and relatives who described his redeeming qualities,
    although several of the family members who testified seemed
    to be unaware of his guilty plea or the details of the crime.
    The maternal figures in Williams’ life described him as a
    caring and dutiful child, and his younger sisters explained
    how he had always cared for them. In addition to this
    character evidence, Williams’ trial counsel pointed to
    hardships in Williams’ life, including the death of his mother,
    10                  WILLIAMS V. FILSON
    his being bounced around different homes and schools, and
    his growing up in the dangerous environment of South-
    Central Los Angeles. Williams also testified, recounting his
    version of events and expressing remorse for what had
    happened.
    At the conclusion of the hearing, the three-judge panel
    sentenced Williams to death. The panel found four statutory
    aggravating circumstances: (1) the murder was committed
    during the commission of a burglary; (2) the murder was
    committed during the course of a robbery with the use of a
    deadly weapon; (3) the murder was committed to avoid or
    prevent Williams’ lawful arrest for the burglary; and (4) the
    murder involved torture and depravity of mind. The panel
    found one statutory mitigating circumstance: the fact that
    Williams was only 19 at the time of the offense. The panel
    concluded that the aggravating circumstances outweighed the
    mitigating circumstances and that death was the appropriate
    punishment.
    B. Direct Appeal and State Post-Conviction Review
    This case has a lengthy history in state court, spanning
    almost 25 years. In addition to pursuing a direct appeal,
    Williams filed a total of six petitions seeking post-conviction
    relief in state court, the last of which the Nevada Supreme
    Court denied in 2007. We provide only a brief overview of
    those proceedings here.
    Williams filed a direct appeal with the Nevada Supreme
    Court shortly after he was sentenced to death in 1983. While
    his direct appeal was pending, he filed his first state petition
    for post-conviction relief, in which he alleged that his trial
    counsel had rendered ineffective assistance in violation of the
    WILLIAMS V. FILSON                      11
    Sixth Amendment. The Nevada Supreme Court held
    Williams’ direct appeal in abeyance while he litigated his
    petition for post-conviction relief. The state trial court held
    an evidentiary hearing on Williams’ ineffective assistance of
    counsel claim in 1984, but ultimately denied relief. Williams
    appealed that ruling to the Nevada Supreme Court. In 1987,
    the Nevada Supreme Court affirmed Williams’ convictions
    and sentence on direct appeal, and affirmed the denial of his
    first petition for post-conviction relief. Williams v. State,
    
    737 P.2d 508
    (Nev. 1987).
    A succession of five additional petitions for post-
    conviction relief followed. The Nevada Supreme Court
    affirmed the denial of Williams’ second and third petitions in
    1988, holding that the claims raised were either procedurally
    barred or barred by the law-of-the-case doctrine. In 1990, the
    Nevada Supreme Court affirmed the denial of Williams’
    fourth petition, again on procedural bar grounds. The state
    trial court held an evidentiary hearing on Williams’ fifth
    petition in 1995, but found none of the claims meritorious.
    The Nevada Supreme Court upheld that ruling in 1997, again
    relying on law-of-the-case and successiveness bars.
    In 2003, Williams filed his sixth and final state petition
    for post-conviction relief, which the Nevada Supreme Court
    denied in 2006 on the basis of state-law timeliness and
    successiveness bars. See Nev. Rev. Stat. §§ 34.726,
    34.810(2). As to one of Williams’ claims, however, the court
    held that good cause excused Williams’ procedural defaults.
    Specifically, the court concluded that two of the four
    aggravating circumstances found by the sentencing
    panel—that the murder was committed during the
    commission of a burglary and during the course of a
    robbery—were rendered invalid under recently decided
    12                  WILLIAMS V. FILSON
    Nevada Supreme Court authority, thus justifying Williams’
    late presentation of the claim. But the court held that
    Williams could not show prejudice because, even after
    striking the two invalid aggravators, the remaining
    aggravators outweighed the lone statutory mitigating
    circumstance beyond a reasonable doubt. In 2007, the
    Nevada Supreme Court denied Williams’ request for en banc
    reconsideration of that ruling, with two justices dissenting.
    C. Federal Habeas Corpus Proceedings
    In January 1998, Williams initiated this action by filing a
    pro se petition for a writ of habeas corpus in federal court.
    The district court accepted the petition for filing in April
    1998, following a delay in Williams’ payment of the filing
    fee. Although a lawyer helped Williams prepare his pro se
    petition, everyone understood that this petition would need to
    be amended after Williams had been appointed federal habeas
    counsel. Unlike most federal habeas petitioners, as a state
    prisoner facing a sentence of death, Williams was statutorily
    entitled to the appointment of counsel to represent him in his
    federal habeas proceedings. See 18 U.S.C. § 3599(a)(2)
    (formerly codified at 21 U.S.C. § 848(q)(4)(B)).
    On April 17, 1998, the district court appointed counsel
    from the Federal Public Defender’s Office to represent
    Williams. Shortly thereafter, the court issued the first in a
    series of scheduling orders governing discovery and the filing
    of an amended petition, pursuant to what practitioners in the
    District of Nevada refer to as the “George Memo.”
    The George Memo established standardized procedures
    for handling federal habeas corpus proceedings involving
    state prisoners sentenced to death. First promulgated in 1992
    WILLIAMS V. FILSON                      13
    under the direction of then-Chief District Judge Lloyd
    George, the George Memo divides capital habeas proceedings
    into five discrete stages and provides sample orders that can
    be issued at each stage. For example, upon the filing of the
    initial petition, the George Memo calls for the district court
    to appoint counsel and schedule an initial status conference.
    At the initial conference, the district court sets a schedule
    affording federal habeas counsel adequate time (typically six
    months) to review the record and conduct all necessary
    discovery. At the same time, the court sets a deadline for the
    filing of an amended federal petition containing all claims
    that the petitioner seeks to litigate, both exhausted and
    unexhausted. Under the procedures outlined in the George
    Memo, the federal petition will be held in abeyance, if
    necessary, to allow the petitioner to complete the exhaustion
    process in state court. Once the petitioner fully exhausts all
    of the claims to be litigated, the federal habeas proceedings
    will then be reopened to allow resolution of the claims on the
    merits. The stated goal of these standardized procedures is to
    reduce the delay and inefficiency caused when federal habeas
    petitioners bounce back and forth between state and federal
    court as they attempt to exhaust available state remedies.
    The district court in this case followed the standardized
    procedures spelled out in the George Memo. After
    appointing counsel in mid-April 1998, the court set the initial
    status conference for August 28, 1998. At the conclusion of
    that hearing, the court issued a scheduling order granting
    Williams’ counsel six months to review the record and
    complete all discovery. The court set a deadline of May 14,
    1999, for the filing of Williams’ amended petition, although
    the parties recognized that the deadline might need to be
    extended depending on how long it took the parties to resolve
    any discovery-related issues.
    14                   WILLIAMS V. FILSON
    As it turned out, discovery-related issues did arise, and at
    Williams’ request the district court twice extended the
    deadline for filing the amended petition. The State did not
    oppose either extension. Williams filed his amended federal
    petition on September 17, 1999, within the deadline
    ultimately set by the court. He then filed a second amended
    petition in May 2002, within the deadline stipulated by the
    parties.
    In May 2003, the district court granted Williams’ request
    to hold his federal habeas proceedings in abeyance while he
    litigated his sixth and final petition for state post-conviction
    relief, the last step necessary to complete the exhaustion
    process. After the Nevada Supreme Court affirmed the denial
    of that petition in 2007, the district court granted Williams’
    request to reopen his federal habeas proceedings, as
    contemplated under the George Memo.
    Williams filed a third amended federal habeas petition,
    the operative petition in this case, in October 2007. Williams
    raised 38 claims for relief and requested an evidentiary
    hearing. In a series of orders entered between 2009 and 2012,
    the district court denied Williams’ request for an evidentiary
    hearing and eventually denied relief on all claims. The court
    held that some of the claims were barred by the federal statute
    of limitations, 28 U.S.C. § 2244(d), and that Williams was
    not entitled to equitable tolling of the federal filing deadline.
    The court concluded that many of Williams’ remaining
    claims were procedurally defaulted because the Nevada
    Supreme Court had determined that they were barred by the
    statute of limitations set by state law, under Nevada Revised
    Statutes § 34.726. As to the handful of claims that survived,
    the district court denied relief on the merits.
    WILLIAMS V. FILSON                       15
    The district court granted a certificate of appealability as
    to the issues we address below in sections II.A, II.C, and II.D.
    As noted above, Williams raised a number of uncertified
    issues in his opening brief, which under Ninth Circuit Rule
    22.1(e), we treat as a request to expand the certificate of
    appealability. We asked the State to respond to several of the
    uncertified issues, and we now grant a certificate of
    appealability as to the issues addressed in sections II.B and
    II.E below.
    II. Discussion
    A. Equitable Tolling
    The Antiterrorism and Effective Death Penalty Act of
    1996 (AEDPA) sets a one-year statute of limitations for filing
    a federal petition for a writ of habeas corpus. 28 U.S.C.
    § 2244(d). It is undisputed in this case that the one-year
    deadline for Williams ran until August 29, 1998. Thus, his
    initial pro se federal petition, accepted for filing on April 15,
    1998, was unquestionably timely. His amended petition, filed
    on September 17, 1999, raised a significant number of new
    claims not asserted in the original petition. That is not
    surprising, given that the amended petition was prepared by
    counsel with expertise in federal habeas proceedings after the
    district court had afforded them time to conduct discovery
    and review the voluminous record. The issue is whether the
    new claims asserted in the amended petition may be
    considered on the merits even though the petition containing
    them was filed after AEDPA’s August 29, 1998, filing
    deadline.
    The claims asserted in the September 1999 amended
    petition may be considered if they “relate back” to claims
    16                  WILLIAMS V. FILSON
    asserted in the original petition filed in April 1998. That is
    because Federal Rule of Civil Procedure 15(c), which applies
    in federal habeas proceedings, provides in relevant part as
    follows:
    (c) Relation Back of Amendments.
    (1) When an Amendment Relates Back.
    An amendment to a pleading relates back to
    the date of the original pleading when:
    *        *      *
    (B) the amendment asserts a claim or
    defense that arose out of the conduct,
    transaction, or occurrence set out—or
    attempted to be set out—in the original
    pleading[.]
    Fed. R. Civ. P. 15(c)(1)(B).
    The district court held that some of the claims asserted in
    Williams’ amended petition do not relate back to the claims
    included in his original petition, thus rendering them
    untimely, even though all of the claims arise out of the same
    conviction and sentence. In so holding, the court applied the
    standard for relation back announced in Mayle v. Felix,
    
    545 U.S. 644
    (2005), a case decided more than five years
    after Williams filed his amended petition. In that case, the
    Supreme Court held that a claim asserted in an amended
    habeas petition relates back to the original petition only if
    “the original and amended petitions state claims that are tied
    to a common core of operative facts.” 
    Id. at 664.
    In so
    holding, the Court rejected the broader reading of Rule 15(c)
    WILLIAMS V. FILSON                       17
    that our court had adopted. See Felix v. Mayle, 
    379 F.3d 612
    (9th Cir. 2004), rev’d, 
    545 U.S. 644
    (2005). We had viewed
    the relevant “transaction” or “occurrence” in federal habeas
    proceedings as the petitioner’s trial and conviction, such that
    claims asserted in an amended petition would relate back so
    long as they arose out of the same trial and conviction
    challenged in the original petition. See 
    id. at 615.
    We need not decide whether the district court’s
    application of the relation-back standard from the Supreme
    Court’s decision in Mayle is correct. For we conclude that,
    even if the claims asserted in the original and amended
    petitions do not share a common core of operative facts,
    Williams is entitled to equitable tolling for the period
    between August 29, 1998, and September 17, 1999. All of
    the claims asserted in the September 1999 amended petition
    are therefore timely under AEDPA.
    To be entitled to equitable tolling, a habeas petitioner
    must demonstrate two things: “(1) that he has been pursuing
    his rights diligently, and (2) that some extraordinary
    circumstance stood in his way and prevented timely filing.”
    Holland v. Florida, 
    560 U.S. 631
    , 649 (2010) (internal
    quotation marks omitted). The State does not contest that
    Williams diligently pursued his rights between August 29,
    1998, and September 17, 1999. Throughout that period, his
    counsel diligently reviewed the record, conducted discovery,
    and prepared an amended petition asserting all potential
    claims on Williams’ behalf, both exhausted and unexhausted,
    as the district court’s scheduling orders directed. See section
    I.C above. Williams’ counsel filed the amended petition
    within the deadline set by the court after obtaining the court’s
    approval of two extension requests, neither of which the State
    opposed. So the only issue here is whether Williams has
    18                  WILLIAMS V. FILSON
    shown an extraordinary circumstance that prevented timely
    filing.
    One way a petitioner can demonstrate an extraordinary
    circumstance is by showing that he relied on controlling
    circuit precedent to file what he thought would be a timely
    federal petition, only to see the circuit precedent subsequently
    overruled, thereby rendering his petition untimely. See Nedds
    v. Calderon, 
    678 F.3d 777
    , 781 (9th Cir. 2012); Harris v.
    Carter, 
    515 F.3d 1051
    , 1056–57 (9th Cir. 2008). We do not
    have quite that situation here. There was no controlling
    circuit precedent in the 1998–1999 time frame that
    interpreted the meaning of the terms “transaction” and
    “occurrence” in Rule 15(c) as applied to federal habeas
    proceedings. Our court did not address that issue until we
    decided Felix v. Mayle in 2004, years after Williams filed his
    amended petition. From August 1998 to September 1999, the
    law in our circuit remained unsettled on how broadly (or
    narrowly) Rule 15(c)’s relation-back standard should be
    construed to apply in federal habeas proceedings.
    In Harris, we left open whether equitable tolling may be
    granted when a petitioner relies on the unsettled state of the
    law (rather than on controlling circuit precedent) in deciding
    when to file his 
    petition. 515 F.3d at 1057
    n.8; see also
    Waldron-Ramsey v. Pacholke, 
    556 F.3d 1008
    , 1013 (9th Cir.
    2009) (same). But the Tenth Circuit has squarely addressed
    that question, in a decision whose reasoning we find
    persuasive here.
    In York v. Galetka, 
    314 F.3d 522
    (10th Cir. 2003), the
    court confronted a set of circumstances similar to those
    present in this case. The petitioner in York relied on the
    unsettled state of the law regarding whether AEDPA’s one-
    WILLIAMS V. FILSON                      19
    year filing deadline would be tolled during the period in
    which an earlier federal habeas petition remained pending.
    York filed his third federal habeas petition on the assumption
    that such tolling would be available. His third petition was
    timely with that period of tolling taken into account but
    untimely without it. When York filed his third petition in
    March 2000, the Tenth Circuit had not yet resolved the issue.
    It did so roughly a year later, when it held in Petrick v.
    Martin, 
    236 F.3d 624
    (10th Cir. 2001), that AEDPA’s tolling
    provision authorized statutory tolling for both state and
    federal petitions during the period in which they remained
    pending. Shortly thereafter, however, the Supreme Court
    held in Duncan v. Walker, 
    533 U.S. 167
    (2001), that the
    tolling provision applied only to pending state petitions,
    thereby rendering York’s third petition untimely.
    The Tenth Circuit concluded that in these circumstances
    York was entitled to equitable tolling.             The court
    acknowledged that York could not have relied on controlling
    circuit precedent in deciding when to file his third petition,
    since the favorable ruling in Petrick had not yet been issued.
    
    York, 314 F.3d at 528
    . The court held that equitable tolling
    was nonetheless appropriate because “the law in this circuit
    was unsettled on the issue”; the statute in question was
    ambiguous as to the availability of tolling for pending federal
    petitions; and the Supreme Court did not resolve that
    ambiguity adversely to York until after he had filed his third
    petition. Id.; see also Griffin v. Rogers, 
    399 F.3d 626
    , 637
    (6th Cir. 2005) (“unstable and unsettled” state of the law
    supported equitable tolling).
    The facts in Williams’ case are similar to those in York,
    although, as we shall explain, the circumstances here favoring
    equitable tolling go beyond those present in York. Williams
    20                  WILLIAMS V. FILSON
    relied on the unsettled state of the law when he assumed that
    the claims asserted in his amended petition would relate back
    to the claims asserted in his original April 1998 petition.
    Rule 15(c) was undoubtedly ambiguous on this point: As
    applied to federal habeas proceedings, the terms “transaction”
    and “occurrence” could readily be understood to mean the
    petitioner’s trial and conviction, as evidenced by the fact that
    two circuits (ours and the Seventh) later interpreted the terms
    in that way, as did the two dissenting Justices in Mayle. See
    
    Mayle, 545 U.S. at 670
    –74 (Souter, J., dissenting, joined by
    Stevens, J.); 
    Felix, 379 F.3d at 615
    ; Ellzey v. United States,
    
    324 F.3d 521
    , 525–26 (7th Cir. 2003). The Supreme Court
    did not resolve the ambiguity in how Rule 15(c) should be
    interpreted until after Williams had filed his amended
    petition, at which point it was too late for him to cure any
    timeliness issues that arose as a result.
    To be entitled to equitable tolling, Williams’ reliance on
    the unsettled state of the law must have been reasonable
    during the time period in question. Cf. Lawrence v. Florida,
    
    549 U.S. 327
    , 336 (2007) (petitioner was not entitled to
    equitable tolling where every circuit to address an issue,
    including petitioner’s home circuit, had resolved the issue
    adversely to him). We think Williams’ reliance was
    eminently reasonable, for at least two reasons.
    First, in surveying the law as it stood at the end of August
    1998, when AEDPA’s one-year filing deadline passed,
    Williams’ counsel had no reason to suspect that Rule 15(c)
    would pose an obstacle to consideration of newly added
    claims in an amended petition. Ninth Circuit law interpreting
    Rule 15(c) in the context of ordinary civil actions had
    construed the relation-back standard broadly, permitting
    relation back of newly added claims arising out of the same
    WILLIAMS V. FILSON                       21
    transaction or occurrence even if “the new claims are based
    on a different legal theory of which there was no warning in
    the original pleading.” 
    Felix, 379 F.3d at 615
    . Because Rule
    15(c)’s reference to “transaction” or “occurrence” could
    plausibly be read in the federal habeas context to refer to the
    petitioner’s conviction and trial, habeas practitioners
    reasonably assumed that newly added claims would relate
    back to the original petition so long as the claims arose out of
    the same trial and conviction challenged in the original
    petition. No circuit court in the country had interpreted Rule
    15(c) to the contrary as of August 1998; the first decision
    imposing a more restrictive reading of Rule 15(c) did not
    come until February 1999. See United States v. Craycraft,
    
    167 F.3d 451
    , 456–57 (8th Cir. 1999). The dearth of
    precedent may explain why the leading habeas treatise at the
    time offered no discussion at all about Rule 15(c)’s relation-
    back standard, either in its section discussing AEDPA’s
    recently added statute of limitations or in the section
    discussing amendment of the petition. See 1 James S.
    Liebman & Randy Hertz, Federal Habeas Corpus Practice
    and Procedure §§ 5.1b, 17.2 (3d ed. 1998).
    Second, Williams’ lawyers were not alone in assuming
    that newly added claims in an amended petition would relate
    back to the original petition; the district court shared that
    assumption. Indeed, the series of scheduling orders entered
    by the court is otherwise hard to explain. When the court
    appointed counsel for Williams in April 1998, only four-and-
    a-half months remained before AEDPA’s one-year limitations
    period expired. But the court did not schedule the first status
    conference until August 28, 1998, literally the day before the
    one-year deadline passed, at which point Williams’ lawyers
    were still digesting the 47 boxes of materials they had
    gathered and, in addition, attempting to formulate a discovery
    22                  WILLIAMS V. FILSON
    plan to obtain the remaining materials they needed to review.
    The court granted counsel six additional months, as
    contemplated under the George Memo, to complete their
    review of the record and to conduct needed discovery. The
    court set an initial May 1999 deadline—well beyond the
    expiration of AEDPA’s one-year statute of limitations—for
    the filing of a comprehensive amended petition asserting all
    potential claims, both exhausted and unexhausted. Setting
    that schedule made little sense if counsel would then be
    precluded from adding new claims unless the claims
    happened to share a common core of operative facts with
    claims Williams had asserted in his original pro se petition.
    The State also assumed that any newly added claims
    would relate back. Only that understanding explains why the
    State waited eight years after receiving the amended petition
    before moving to dismiss any of the claims on the ground that
    they did not relate back to the original petition under Rule
    15(c).
    In sum, it was not until the Supreme Court decided Mayle
    in 2005 that anyone involved in this case suggested that the
    newly added claims might not relate back and could therefore
    be deemed untimely. Until then, the George Memo was
    followed, and it assumed that allowing amendment to add
    new claims was a valid way of efficiently structuring habeas
    proceedings in capital cases.
    We hold that Williams is entitled to equitable tolling for
    the period from August 29, 1998, to September 17, 1999, and
    accordingly reverse the district court’s contrary ruling.
    Ultimately, the district court dismissed just a handful of
    Williams’ claims based solely on the assumed untimeliness
    of his September 1999 amended petition: Claims 1(C), 1(D),
    WILLIAMS V. FILSON                              23
    1(E), 1(H), 1(I), 1(J), 9, and 14. We remand for further
    proceedings as to each of those claims.1
    B. Claims 1(A) and 1(F)
    We turn now to two related claims alleging ineffective
    assistance by Williams’ trial counsel, Shelly O’Neill. In
    Claim 1(A), Williams alleges that O’Neill unreasonably
    failed to discover and present evidence that Williams suffers
    from brain damage. In Claim 1(F), Williams alleges that
    O’Neill unreasonably failed to investigate and present
    substantial mitigating evidence regarding his abusive and
    traumatic childhood. Williams argues that this evidence
    might have dissuaded the three-judge panel from sentencing
    him to death, and that the district court erred in denying him
    relief on these claims without granting his request for an
    evidentiary hearing.
    Although these claims are substantively related, they
    come before us with different procedural backgrounds. Our
    analysis is informed by the standard of review applicable to
    each. We conclude that the district court did not abuse its
    discretion in denying an evidentiary hearing as to Claim 1(A).
    Although we conclude that O’Neill was deficient in failing to
    uncover evidence of Williams’ brain damage, we defer to the
    Nevada Supreme Court’s conclusion that this evidence on its
    own does not create a reasonable probability that the outcome
    of Williams’ sentencing hearing would have been different.
    1
    As explained in section II.E below, Claims 1(D), 1(E), 1(H), 1(I),
    and 1(J) were procedurally defaulted under state law. Thus, the district
    court’s first order of business as to these claims, which allege ineffective
    assistance of trial counsel, will be to determine whether the default is
    excused under the rule established in Martinez v. Ryan, 
    566 U.S. 1
    (2012).
    24                  WILLIAMS V. FILSON
    As to Claim 1(F), however, we agree with Williams that the
    district court abused its discretion in denying an evidentiary
    hearing. We remand for the district court to hold an
    evidentiary hearing so that it may properly assess whether the
    evidence of Williams’ childhood abuse and trauma—in
    combination with the brain damage evidence that was not on
    its own sufficient—gives rise to a reasonable probability that
    the outcome of Williams’ sentencing hearing would have
    been different.
    1. Claim 1(A)
    Williams presented the substance of Claim 1(A) in his
    sixth and final state petition for post-conviction relief in
    2003. The claim was substantiated by expert reports prepared
    in 1999 by Dr. David Schmidt, a clinical neuropsychologist,
    and Dr. Dennis DePry, a psychiatrist. Dr. Schmidt diagnosed
    Williams with neuropsychological impairment, traumatic
    brain injury, and polysubstance abuse. He reported that
    Williams’ brain damage likely hampered his “ability to
    anticipate the long term consequences of his actions” and
    made him “more likely to act-out in a criminal manner.” Dr.
    DePry concurred in these diagnoses, and added that Williams
    suffered from mixed personality disorder with dependent and
    schizoid traits.
    The Nevada Supreme Court held that Williams had
    procedurally defaulted this claim, citing state-law timeliness
    and successiveness bars. See Nev. Rev. Stat. §§ 34.726,
    34.810(2). Although it rejected the claim on procedural
    grounds, the court’s order denying Williams’ request for en
    banc reconsideration arguably reached the merits, as it
    addressed the ineffective assistance issue in considering
    whether Williams failed to show cause and prejudice
    WILLIAMS V. FILSON                            25
    sufficient to overcome the procedural bars. With respect to
    prejudice at the guilt phase, the court reasoned that the
    doctors’ reports “did not suggest that Williams was
    incompetent, insane, or lacked the capacity to understand his
    actions.” With respect to the penalty phase, the court was
    “not persuaded that even assuming trial counsel had
    discovered and presented the brain damage evidence . . . in
    mitigation that it had a reasonable probability of altering the
    outcome of the penalty hearing.”2
    The State argues that the Nevada Supreme Court’s
    decision constitutes an adjudication on the merits of Claim
    1(A) and thus warrants AEDPA deference under 28 U.S.C.
    § 2254(d). The State contends that the court “accepted as true
    Williams’ proffered reports” and engaged in the analysis
    required under Strickland v. Washington, 
    466 U.S. 668
    (1984). The district court agreed, concluding that, “[e]ven
    though the court was considering the claim as part of its
    procedural default analysis, the ruling constitutes an
    adjudication on the merits for the purposes of § 2254(d).”
    Although we have doubts about whether the Nevada
    Supreme Court reached the merits of Williams’ claim, we
    recognize that the court did apply the functional equivalent of
    Strickland’s prejudice standard in conducting its cause-and-
    prejudice analysis. See Early v. Packer, 
    537 U.S. 3
    , 8 (2002)
    (per curiam) (explaining that AEDPA deference may be due
    even when the state court did not cite the federal standard).
    2
    Two justices dissented from the denial of Williams’ en banc request.
    They would have remanded to the state trial court for a “full evidentiary
    hearing concerning the extent of any actual physical brain damage and its
    impact on Williams’s eligibility for the death penalty,” particularly
    because two of the four aggravating factors had been stricken.
    26                  WILLIAMS V. FILSON
    Because Williams does not dispute that the Nevada Supreme
    Court’s decision amounted to a merits determination, we join
    the parties in assuming that the Nevada Supreme Court
    reached the merits of the Strickland issue and that the
    limitations of § 2254(d) therefore apply. Accepting those
    limitations, we cannot conclude that the district court abused
    its discretion in denying an evidentiary hearing on Claim
    1(A).
    Under § 2254(d), our review “is limited to the record that
    was before the state court that adjudicated the claim on the
    merits.” Cullen v. Pinholster, 
    563 U.S. 170
    , 181 (2011). And
    we must defer to the state court’s rejection of Claim 1(A)
    unless it “was contrary to, or involved an unreasonable
    application of, clearly established Federal law,” or “was
    based on an unreasonable determination of the facts in light
    of the evidence presented” in state court. 28 U.S.C.
    § 2254(d). Strickland supplies the clearly established federal
    law for ineffective assistance of counsel claims. Under
    Strickland, Williams must demonstrate that his counsel’s
    performance was constitutionally deficient and that the
    deficient performance prejudiced 
    him. 466 U.S. at 687
    . To
    establish deficient performance, Williams must show that his
    counsel’s performance “fell below an objective standard of
    reasonableness.” 
    Id. at 688.
    To establish prejudice, Williams
    must “show that there is a reasonable probability that, but for
    counsel’s unprofessional errors, the result of the proceeding
    would have been different.” 
    Id. at 694.
    We may grant Williams habeas relief only if we find that
    the Nevada Supreme Court’s application of Strickland was
    “objectively unreasonable.” Woods v. Sinclair, 
    764 F.3d 1109
    , 1132 (9th Cir. 2014). In making this determination, we
    bear in mind that the “standards created by Strickland and
    WILLIAMS V. FILSON                       27
    § 2254(d) are both highly deferential, and when the two apply
    in tandem, review is doubly so.” Harrington v. Richter,
    
    562 U.S. 86
    , 105 (2011) (internal quotation marks and
    citations omitted). We note, however, that while the Nevada
    Supreme Court effectively applied Strickland’s prejudice
    standard, it made no determination as to whether O’Neill’s
    failure to have Williams examined by a competent
    neuropsychologist amounts to deficient performance. We
    therefore review this element of Williams’ claim de novo.
    See Porter v. McCollum, 
    558 U.S. 30
    , 39 (2009) (per curiam).
    As to the guilt phase of the trial, the Nevada Supreme
    Court’s denial of relief was not objectively unreasonable.
    Even assuming that O’Neill’s performance was deficient, the
    Nevada Supreme Court’s determination that Williams was
    not prejudiced as a result is entitled to deference. The
    evidence demonstrating Williams’ guilt was substantial, and
    it was not unreasonable for the state court to conclude that the
    evidence contained in the doctors’ reports would have been
    insufficient to support a credible insanity defense or to prove
    that Williams’ guilty plea was invalid. See Bemore v.
    Chappell, 
    788 F.3d 1151
    , 1169–70 (9th Cir. 2015).
    The question is much closer with respect to the penalty
    phase. “At the penalty phase, counsel’s duty to follow up on
    indicia of mental impairment is quite different from—and
    much broader and less contingent than—the more confined
    guilt-phase responsibility.” 
    Id. at 1171.
    Trial counsel must
    therefore inquire into any mental impairments her client may
    have and “consult with appropriate medical experts.” 
    Id. (internal quotation
    marks omitted).
    O’Neill’s failure to make adequate inquiry in this case
    cannot be excused, given our insistence “that all relevant
    28                  WILLIAMS V. FILSON
    mitigating information be unearthed for consideration at the
    capital sentencing phase” and that counsel “pursue relevant
    leads.” 
    Id. (internal quotation
    marks omitted). Competent
    counsel would have obtained records containing conspicuous
    red flags indicating that evaluation by a competent medical or
    mental health professional was warranted. Most prominently,
    Williams’ juvenile court records indicate that in 1977 his
    probation officer “requested psychological testing in
    connection with assessment of possible organicity or brain
    damage.” That testing revealed that there was “definitely
    some type of perceptual-motor inability or restrictiveness.”
    In addition, Williams’ juvenile and medical records document
    his consistent substance abuse during critical years for brain
    development. They reveal that he began sniffing glue as
    early as age 14, became increasingly dependent on alcohol
    during adolescence, and experimented with PCP. A fulsome
    investigation would also have revealed that Williams suffered
    multiple head injuries, including one from a car collision that
    left him unconscious for a period of 15 minutes and for which
    he never received medical treatment. Reviewing this aspect
    of the claim de novo, we conclude that O’Neill’s failure to
    have Williams evaluated by a competent medical or mental
    health professional constituted deficient performance. See
    Caro v. Woodford, 
    280 F.3d 1247
    , 1254–56 (9th Cir. 2002);
    Hendricks v. Calderon, 
    70 F.3d 1032
    , 1043 (9th Cir. 1995).
    The Nevada Supreme Court determined that Williams
    was not prejudiced by O’Neill’s deficient performance. Our
    review of that determination is limited by the restrictions of
    § 2254(d), and we conclude that the state court did not
    unreasonably apply Strickland’s prejudice standard. The
    doctors’ reports suggest that, relative to the brain-damaged
    population, Williams’ impairment was not particularly
    severe: His score on a battery of tests placed his overall
    WILLIAMS V. FILSON                       29
    neuropsychological functioning in the “mildly impaired
    range” as compared to the general population. Weighed
    against Williams’ crime, it was not unreasonable for the
    Nevada Supreme Court to conclude that this evidence did not,
    on its own, give rise to a reasonable probability that the
    outcome of the sentencing hearing would have been different.
    2. Claim 1(F)
    We turn now to Claim 1(F), Williams’ ineffective
    assistance of counsel claim predicated on O’Neill’s failure to
    investigate and present compelling mitigating evidence
    regarding Williams’ childhood. Williams presented the
    substance of this claim in his amended 1993 state petition for
    post-conviction relief. In support of the claim, he submitted
    15 declarations from relatives and friends attesting to a
    childhood rife with neglect and abuse. After holding an
    evidentiary hearing, the state trial court denied relief in 1996,
    reasoning that it was “bound by the doctrine of the law of the
    case” because the Nevada Supreme Court had already
    considered and denied Williams’ ineffective assistance claims
    in 1987. See 
    Williams, 737 P.2d at 510
    . For good measure,
    the court also explained that O’Neill had in fact “investigated
    Mr. Williams’ difficult childhood and his youth,” and that the
    claim “would be dismissed on those grounds as well.” In
    1997, the Nevada Supreme Court affirmed only on the first
    ground, concluding “that the lower court properly dismissed
    Williams’ petition based upon the doctrine of the law of the
    case.”
    The Nevada Supreme Court’s reliance on the law-of-the-
    case doctrine amounted to a finding that Williams had
    procedurally defaulted Claim 1(F) by violating the state-law
    bar on successive petitions. See Nev. Rev. Stat. § 34.810(2).
    30                  WILLIAMS V. FILSON
    However, the State has conceded that at the time it was
    invoked, Nevada’s successiveness bar was not consistently
    applied and is therefore not an adequate state ground to
    preclude federal review. Accordingly, the State concedes that
    federal review of Claim 1(F) is de novo.
    The question before us is whether the district court abused
    its discretion in denying relief on the claim without granting
    Williams’ request for an evidentiary hearing. Williams is
    entitled to an evidentiary hearing if he can (1) “show that he
    has not failed to develop the factual basis of the claim in the
    state courts”; (2) meet one of the factors identified by the
    Supreme Court in Townsend v. Sain, 
    372 U.S. 293
    (1963),
    overruled on other grounds by Kenney v. Tamayo-Reyes,
    
    504 U.S. 1
    (1992); and (3) “make colorable allegations that,
    if proved at an evidentiary hearing, would entitle him to
    habeas relief.” Insyxiengmay v. Morgan, 
    403 F.3d 657
    , 670
    (9th Cir. 2005).
    The first condition is easily met. Williams presented the
    evidence underlying Claim 1(F) in his 1993 state petition and
    at the state evidentiary hearing in 1995. Because he did not
    fail to develop the factual basis of the claim in state court,
    28 U.S.C. § 2254(e)(2) poses no bar to a federal evidentiary
    hearing.
    As to the second condition, Williams must show at least
    one of the following:
    (1) the merits of the factual dispute were not
    resolved in the state hearing; (2) the state
    factual determination is not fairly supported
    by the record as a whole; (3) the fact-finding
    procedure employed by the state court was not
    WILLIAMS V. FILSON                     31
    adequate to afford a full and fair hearing;
    (4) there is a substantial allegation of newly
    discovered evidence; (5) the material facts
    were not adequately developed at the state-
    court hearing; or (6) for any reason it appears
    that the state trier of fact did not afford the
    habeas applicant a full and fair fact hearing.
    
    Townsend, 372 U.S. at 313
    . At least one factor applies here:
    The merits of the factual dispute were not resolved in state
    court (Townsend factor 1) because the claim was rejected by
    the Nevada Supreme Court on procedural grounds. And to
    the extent the state trial court considered the merits of the
    claim, that court’s determination was not “fairly supported by
    the record as a whole” (Townsend factor 2). The state trial
    court held that the claim was “directly contradicted” by the
    fact that O’Neill “spoke to numerous members of Mr.
    Williams’ family and friends” and had “investigated Mr.
    Williams’ difficult childhood and his youth.” But the court
    made no reference to the content of the 15 declarations,
    which, as discussed below, differs greatly from what O’Neill
    elicited in her investigation.
    Having satisfied the first two conditions, Williams is
    entitled to an evidentiary hearing as long as he advances
    “colorable allegations that, if proved at an evidentiary
    hearing, would entitle him to habeas relief.” 
    Insyxiengmay, 403 F.3d at 670
    ; see also Quezada v. Scribner, 
    611 F.3d 1165
    , 1166–67 (9th Cir. 2010) (order). The Supreme Court
    has held that a failure to investigate and present mitigating
    evidence of childhood abuse and trauma may constitute
    ineffective assistance of counsel. Sears v. Upton, 
    561 U.S. 945
    , 948, 956 (2010) (per curiam); Wiggins v. Smith,
    
    539 U.S. 510
    , 524 (2003). To determine whether that is the
    32                   WILLIAMS V. FILSON
    case here, we turn again to Strickland. Reviewing the matter
    de novo, we conclude that Williams has alleged a colorable
    claim that O’Neill rendered deficient performance and that
    Williams suffered prejudice as a result.
    a. Deficient Performance
    We begin with Strickland’s deficient performance prong.
    It is instructive to consult “[r]estatements of professional
    standards” that “describe the professional norms prevailing
    when the representation took place.” Bobby v. Van Hook,
    
    558 U.S. 4
    , 7 (2009) (per curiam). The ABA Standards for
    Criminal Justice applicable at the time of Williams’ trial
    explained that defense counsel has “a substantial and
    important role to perform in raising mitigating factors,” and
    that “[i]nformation concerning the defendant’s background,
    education, employment record, mental and emotional
    stability, family relationships, and the like, will be relevant.”
    ABA Standards for Criminal Justice 4-4.1, p. 4-55 (2d ed.
    1980). We have explained that “the investigation should
    include inquiries into social background and evidence of
    family abuse.” Summerlin v. Schriro, 
    427 F.3d 623
    , 630 (9th
    Cir. 2005) (en banc). Counsel’s obligation “to cast a wide net
    for all relevant mitigating evidence” is at its height during the
    penalty phase of a capital case. Frierson v. Woodford,
    
    463 F.3d 982
    , 989 (9th Cir. 2006). Assessed against these
    standards, Williams has alleged a colorable claim that
    O’Neill’s failure to uncover evidence of Williams’ childhood
    abuse and trauma constitutes deficient performance.
    “[T]he presence of certain elements in a capital
    defendant’s background, such as a family history of
    alcoholism, abuse, and emotional problems, triggers a duty to
    conduct further inquiry before choosing to cease
    WILLIAMS V. FILSON                       33
    investigating.” Earp v. Ornoski, 
    431 F.3d 1158
    , 1175–76
    (9th Cir. 2005) (citing 
    Wiggins, 539 U.S. at 525
    ). O’Neill
    failed to take even the first steps of an adequate investigation,
    which in this case would have revealed warning signs
    regarding each of those elements in Williams’ background.
    She failed to obtain Williams’ juvenile records, which would
    have revealed that Williams’ behavioral issues arose after his
    mother died when he was nine. She failed to obtain his
    medical records, which would have revealed that Williams
    dealt with the “emotional turmoil” in his life by resorting to
    drug use that negatively affected his “mental stability.” And
    she failed to obtain Williams’ school records, which would
    have revealed that his performance deteriorated throughout
    adolescence.
    As discussed at length below, the declarations submitted
    in support of Claim 1(F) confirm that each of the red flags
    identified in Earp was present in Williams’ background, and
    were in fact such prominent features of his childhood that
    anything beyond a cursory investigation would have
    uncovered them. And indeed, the declarations indicate that
    the little investigation O’Neill did do was, in fact, cursory at
    best.
    O’Neill’s investigation consisted of one three-day trip to
    Los Angeles, during which she met with a number of
    Williams’ relatives and, according to one account, “talked to
    each person for ten to fifteen minutes.” Williams’ sister April
    reported that “I had barely begun to tell her [about] my
    brother, when it was all over.” Williams’ sister Cynthia
    reported that O’Neill asked her only “a little bit about how we
    grew up.” Had O’Neill engaged more deeply, April and
    Cynthia could have described in detail the abuse that they and
    Williams endured throughout their childhoods. It is no
    34                  WILLIAMS V. FILSON
    excuse that they and other family members were not
    immediately more forthcoming in their brief interviews with
    O’Neill. “Trial counsel has an affirmative duty not to simply
    accept the facts as they might be presented at first blush, but
    rather to ‘unearth[] for consideration’ at the sentencing phase
    ‘all relevant mitigation information.’” Doe v. Ayers, 
    782 F.3d 425
    , 437 (9th Cir. 2015) (quoting Wallace v. Stewart,
    
    184 F.3d 1112
    , 1117 (9th Cir. 1999)).
    O’Neill failed not only to elicit relevant information, but
    also to prepare the family members and friends who testified
    at the sentencing hearing. Williams’ sister April explained
    that O’Neill did not even mention when they met in Los
    Angeles that she would be asked to testify at the sentencing
    hearing, much less go over the kinds of questions she would
    be asked. This lack of preparation is apparent in the
    transcript of Williams’ sentencing hearing, which is replete
    with indications that O’Neill failed to inform her most
    important witnesses of the questions she planned to ask them.
    Williams’ sister Cynthia, for instance, insisted on the stand
    that Williams had not committed the murder, despite his
    guilty plea. When asked if Williams should be allowed to
    live even if he had committed the murder, Cynthia replied:
    “No. If he did it, no, he shouldn’t.” Williams’ aunt, Inez
    Kelly, another critical witness, also insisted on Williams’
    innocence, and revealed that she had never been informed of
    the salient details of the crime. We have made clear that “the
    failure to prepare a witness adequately can render a penalty
    phase presentation deficient.” Hamilton v. Ayers, 
    583 F.3d 1100
    , 1121 (9th Cir. 2009).
    Having lapsed in her investigatory and preparatory duties,
    O’Neill was left to base her mitigation case primarily on
    Williams’ redeeming qualities. The district court concluded
    WILLIAMS V. FILSON                     35
    that “O’Neill arrived at this strategy after conducting a
    reasonable investigation into Williams’s family and social
    background.” We cannot agree. While it is “strongly
    presumed” that counsel “made all significant decisions in the
    exercise of reasonable professional judgment,” 
    Strickland, 466 U.S. at 690
    , we cannot credit O’Neill’s decision to
    present the mitigation case she did as a strategic choice
    because “counsel cannot be said to have made a tactical
    decision without first procuring the information necessary to
    make such a decision.” Reynoso v. Giurbino, 
    462 F.3d 1099
    ,
    1112 (9th Cir. 2006); see also Correll v. Ryan, 
    539 F.3d 938
    ,
    949 (9th Cir. 2008) (“An uninformed strategy is not a
    reasoned strategy. It is, in fact, no strategy at all.”).
    Moreover, no competent counsel would have made an
    informed choice to present the “good guy” mitigation case
    that O’Neill presented, when far more compelling mitigating
    evidence (discussed in the next section) was available. The
    judges on the sentencing panel heard that Williams “loved
    church” and was “always helping people.” They heard that
    he made sure his younger sisters had lunch money for school,
    and that he helped out in his great-uncle’s shop. This defense
    was obviously insufficient to mitigate what the prosecutor
    called “the most brutal, the most sadistic and most merciless
    murder ever in the history of Washoe County.” See 
    Bemore, 788 F.3d at 1172
    (“[A] good character defense was unlikely
    to be persuasive to a jury that had just decided that
    [defendant] had carried out a grizzly murder, including
    torturing the victim . . . .”). O’Neill herself even told the
    judges that “[n]early everyone I talk to wants Cary Williams
    to die,” and that “if [she] thought that killing Cary Williams
    would bring Katherine Carlson and her baby back,” she felt
    “that would be a fair exchange.” In his closing argument at
    sentencing, the prosecutor summed up O’Neill’s presentation:
    36                 WILLIAMS V. FILSON
    “So where, then, are the mitigating factors? They simply do
    not exist in this case.”
    b. Prejudice
    We turn now to Strickland’s prejudice prong. To
    establish prejudice, Williams must show that there is “a
    reasonable probability that, but for counsel’s unprofessional
    errors, the result of the proceeding would have been
    different.” 
    Strickland, 466 U.S. at 694
    . Comparing the
    mitigation case that O’Neill presented to the case that an
    adequate investigation would have yielded, we conclude that
    Williams has alleged a colorable claim that he was prejudiced
    by O’Neill’s deficient performance.
    O’Neill’s mitigation case portrayed Williams as a
    thoughtful and dutiful child who grew up with the support of
    a loving family, despite being “bounced around a little bit”
    between homes and schools. In light of Williams’ proffered
    evidence, we now know that an adequate investigation would
    have revealed an upbringing marred by violence and
    upheaval, and a family life rife with abuse and neglect.
    The declarations of friends and relatives reveal a life
    plagued by violence at home beginning when Williams was
    five years old. It was then that his mother married Tommy
    Enge, who frequently beat her in front of the children—once
    so badly that she miscarried. When Williams stepped in to
    try to protect his mother, the violence was directed at him.
    Williams’ sister remembers one occasion on which Mr. Enge
    beat an eight-year-old Williams “like he was hitting a man.”
    Williams and his mother and sisters endured constant abuse
    for nearly three years, until Williams’ mother separated from
    Mr. Enge.
    WILLIAMS V. FILSON                       37
    But any respite was short-lived. The following year,
    Williams’ mother became bedridden with cancer. Williams
    acted as her caretaker and agonized over her daily
    deterioration until she died, when Williams was nine. The
    sentencing judges heard that Williams “missed” his mother,
    but not that he was so distraught at her funeral that he nearly
    dragged her casket off its platform, or that his teachers began
    to recognize behavioral problems around this time.
    Following their mother’s death, Williams and his sisters
    were passed between relatives who fought over the Social
    Security benefits that followed them. The sentencing judges
    heard that Williams was “shuffl[ed] from one caring relative
    to another,” each of whom “loved him very much.” They did
    not hear that Williams experienced constant abuse and
    neglect in each household.
    Williams and his sisters first moved in with their mother’s
    cousin, Inez Kelly. Ms. Kelly largely confined the children
    to the house and hoarded food so that they did not have
    enough to eat. Williams was forced to assume adult
    responsibilities, acting as a parent to his younger sisters and
    learning to drive at age nine so that he could take over the
    wheel when Ms. Kelly became too drunk to drive. When the
    children failed to live up to Ms. Kelly’s exacting standards,
    she would punish them by locking them in a dark closet for
    hours or, more often, whip them with an extension cord with
    frayed wires at the end. These beatings left the children
    bruised and bloody. One whipping sent Williams’ sister to
    the emergency room, but Williams consistently got the worst
    of it. Ms. Kelly’s husband, Roosevelt Kelly, also frequently
    beat Williams. On one occasion, Mr. Kelly “had [12-year-old
    Williams] down on the ground and was whipping him as hard
    as he could, like he was hitting a punching bag.” Mr. Kelly
    38                  WILLIAMS V. FILSON
    also battered Ms. Kelly and sexually abused Williams’
    sisters, which Williams was helpless to prevent. Unable to
    endure this abuse, Williams ran away at age 13.
    Williams then lived for a brief time with his aunt Jean
    Williams. The sentencing judges were told that Williams
    “didn’t get along with” Aunt Jean’s husband, Lawrence Enge
    (Tommy Enge’s younger brother). They were not told that
    Williams’ problem with Mr. Enge was his frequent abuse of
    Williams’ aunt, grandmother, and sister, or that Mr. Enge was
    later convicted of child abuse.
    Williams and his sisters next moved in with their aunt
    Katheryn Carter and her husband Larry Joe Carter. Neglected
    and again denied food, the only attention the children
    received in this house was unwanted. The Carters beat
    Williams and his sisters for a range of small infractions. And
    Williams was again left helpless to prevent the sexual abuse
    of his sisters, this time at the hands of Mr. Carter, who also
    allegedly raped and impregnated his own daughter. Williams
    and his sisters eventually returned to live with Aunt Jean and
    Lawrence Enge, who continued to sexually abuse one of
    Williams’ sisters. In the midst of this rampant sexual abuse,
    Ms. Kelly had two of Williams’ sisters fitted with intrauterine
    devices without their knowledge, which have left them able
    to give birth only through caesarean section.
    As Williams entered his teenage years, this family turmoil
    was increasingly matched by violence outside the home.
    O’Neill told the sentencing judges that Williams grew up in
    a “rough neighborhood” where “white people would fear to
    go,” but she failed to convey the level of violence he
    experienced. Between ages 14 and 16, Williams witnessed
    the shooting deaths of at least three of his friends. At age 16
    WILLIAMS V. FILSON                       39
    or 17, he was surrounded by teenagers who placed a sawed-
    off shotgun in his mouth, only to be saved by a passing police
    car. He returned home from that incident to find his family
    already mourning his death. Williams estimates that he was
    shot at over 100 times, and he was struck on two occasions.
    At age 18, shortly before he moved to Reno, Williams
    underwent three separate operations to dislodge a bullet from
    his chest.
    Unable to cope with his reality at home and on the streets,
    Williams turned to substance abuse at a young age. He was
    an alcoholic by age 13, and required medical treatment for
    sniffing glue three weeks after his 14th birthday. He
    eventually turned to harder drugs like PCP, and his behavior
    became increasingly self-destructive. At 16, Williams
    attempted to commit suicide by overdosing on sleeping pills.
    At 18, distraught over the recent deaths of his grandmother
    and favorite uncle, Williams drove Aunt Jean’s car into
    oncoming traffic in a busy intersection, resulting in a
    collision that totaled his aunt’s car and left him with a severe
    head injury.
    We cannot agree with the district court that “much of the
    social history set forth in support of this claim was, indeed,
    presented to the three-judge panel.” The judges heard
    virtually nothing that would have helped them understand the
    full extent of the abuse and trauma Williams had endured
    during his formative years, the role those experiences played
    in shaping the person he became, and why he might therefore
    be deserving of mercy. O’Neill only faintly hinted at the
    adversity Williams faced during childhood, leading the
    prosecutor to describe her half-hearted “bad background”
    case as “almost laughable.”
    40                   WILLIAMS V. FILSON
    Had Williams’ counsel been effective, the sentencing
    judges would have learned that Williams had precisely “the
    kind of troubled history [the Supreme Court] ha[s] declared
    relevant to assessing a defendant’s moral culpability.”
    
    Wiggins, 539 U.S. at 535
    . They would have learned that
    Williams endured relentless violence throughout his
    childhood and adolescence, and they would have gained
    insight into his inability to cope with that trauma through
    testimony describing his increasingly self-destructive
    behavior. “This evidence may not have made [him] any more
    likable to the [judges], but it might have helped the [judges]
    understand [him], and his horrendous acts . . . .” 
    Sears, 561 U.S. at 951
    .
    The district court speculated that attempting to present the
    social history described above, “with witnesses giving
    conflicting testimony and being subject to cross-examination,
    would have painted a murky and confusing picture of
    Williams’s childhood.” This is precisely the kind of
    speculation in which the district court should not have
    engaged without the benefit of an evidentiary hearing, during
    which the court could actually assess how credible and
    compelling the testimony would have been. The mitigating
    evidence submitted in support of Claim 1(F) is sufficient to
    support the conclusion that Williams has a colorable claim
    that he was prejudiced by O’Neill’s deficient performance.
    Thus, the district court abused its discretion in denying an
    evidentiary hearing as to Claim 1(F). See Stankewitz v.
    Woodford, 
    365 F.3d 706
    , 725 (9th Cir. 2004).
    While the mitigating evidence underlying Claim 1(F) is
    sufficient on its own to support this conclusion, it is proper in
    our prejudice analysis to consider the impact this evidence
    would have had in combination with the evidence of brain
    WILLIAMS V. FILSON                       41
    damage underlying Claim 1(A). Claims 1(A) and 1(F) allege
    related aspects of O’Neill’s ineffective assistance in preparing
    Williams’ mitigation case. The claims are formally separate,
    however, because they were presented and handled piecemeal
    in the state courts. We are bound by the standard of review
    attached to each claim, and accordingly defer to the Nevada
    Supreme Court’s conclusion that the brain damage evidence
    underlying Claim 1(A) is insufficient on its own to raise a
    reasonable probability that the outcome of Williams’
    sentencing hearing would have been different. However, that
    evidence cannot simply be ignored when assessing prejudice
    as to Claim 1(F).
    It is beyond debate that evidence of brain damage can be
    powerful mitigating evidence. See 
    Sears, 561 U.S. at 956
    ;
    
    Porter, 558 U.S. at 36
    , 41. Although perhaps insufficient to
    have altered the outcome on its own, this evidence surely
    would have had some incremental impact on the sentencing
    decision. That incremental impact must be factored into the
    prejudice analysis with respect to Claim 1(F). We have long
    recognized that the cumulative effect of multiple errors may
    prejudice a defendant even if no single error in isolation is
    sufficient to establish prejudice. See United States v.
    Frederick, 
    78 F.3d 1370
    , 1381 (9th Cir. 1996). Of course, we
    cannot consider the cumulative effect of non-errors. Fuller
    v. Roe, 
    182 F.3d 699
    , 704 (9th Cir. 1999) (per curiam),
    overruled on other grounds by Slack v. McDaniel, 
    529 U.S. 473
    (2000). But the Nevada Supreme Court did not address
    whether O’Neill’s failure to uncover evidence of Williams’
    brain damage was constitutionally deficient, and reviewing
    that aspect of the claim de novo, we have determined that it
    was. That failure was part and parcel of O’Neill’s deficient
    performance in preparing Williams’ mitigation case, and so
    it is properly within the scope of our prejudice inquiry. See
    42                  WILLIAMS V. FILSON
    
    Bemore, 788 F.3d at 1176
    ; Sanders v. Ryder, 
    342 F.3d 991
    ,
    1001 (9th Cir. 2003); Silva v. Woodford, 
    279 F.3d 825
    , 834
    (9th Cir. 2002).
    We have long recognized not only that “prejudice
    resulting from ineffective assistance of counsel must be
    ‘considered collectively, not item by item,’” but also that
    “[t]his is particularly true when . . . the different pieces of
    mitigating evidence fit together into an internally coherent
    and compelling narrative whole.” 
    Doe, 782 F.3d at 460
    n.62
    (quoting Kyles v. Whitley, 
    514 U.S. 419
    , 436 (1995)).
    Evidence of brain damage and childhood abuse often operate
    in tandem and together “amount[] to classic mitigating
    circumstances.” 
    Correll, 539 F.3d at 944
    ; see also 
    Earp, 431 F.3d at 1179
    . That certainly could have been the case
    here, where the neglected evidence would have been mutually
    corroborative and reinforcing. The beatings Williams
    endured may help explain his brain damage (Dr. Schmidt
    explained that the brain damage was likely caused in part by
    “blows to his head during his developmental years”), and the
    history of abuse sheds light on his psychological development
    (Dr. DePry emphasized the significance of Williams’
    “turbulent, chaotic and abusive upbringing as it relates to his
    behavior and personality”).
    Considering the impact that the evidence of brain damage
    and childhood abuse might have had in tandem, we have no
    trouble concluding that Williams has presented a colorable
    claim that he was prejudiced by O’Neill’s deficient
    performance in preparing the mitigation case. We therefore
    hold that the district court abused its discretion in denying an
    evidentiary hearing on Claim 1(F) and remand for such a
    hearing. Once the evidence underlying that claim has been
    further developed, the district court will be in a position to
    WILLIAMS V. FILSON                              43
    determine whether Williams is entitled to relief. In assessing
    whether there is a reasonable probability that Williams would
    have received a different sentence, the district court should
    consider “the totality of the available mitigation evidence,”
    including the evidence of brain damage, and “reweigh[] it
    against the evidence in aggravation,” bearing in mind that two
    of the four aggravating factors considered at Williams’
    sentencing have since been stricken. Williams v. Taylor,
    
    529 U.S. 362
    , 397–98 (2000).3
    C. Claims 1(B) and 1(G)
    We turn next to Williams’ contention that the district
    court erred by denying his request for an evidentiary hearing
    on two additional ineffective assistance of counsel claims. In
    Claim 1(B), Williams alleges that O’Neill rendered
    ineffective assistance during the guilt phase by failing to
    prepare an adequate defense. In Claim 1(G), Williams
    contends that O’Neill rendered ineffective assistance during
    the penalty phase by failing to retain a medical expert who
    could rebut the State’s evidence that Ms. Carlson’s murder
    involved torture.
    Williams makes two related arguments that apply equally
    to both claims. First, he argues that the district court’s refusal
    to hold an evidentiary hearing was predicated on the court’s
    erroneous determination that it could not consider certain
    3
    Claim 1(H) alleges another related deficiency in O’Neill’s penalty-
    phase representation: her failure to obtain Williams’ juvenile records. If
    after further proceedings on that claim, 
    see supra
    section II.A, the district
    court concludes that this failure amounts to deficient performance, then
    any prejudice flowing from it should figure in the court’s cumulative
    prejudice analysis as well.
    44                   WILLIAMS V. FILSON
    documentary evidence (declarations, memos, and reports)
    submitted in support of his claims. Second, he argues that,
    even if the district court’s initial ruling was correct under the
    law as it then stood, he is entitled to have the documentary
    evidence considered under the rule subsequently established
    in Martinez v. Ryan, 
    566 U.S. 1
    (2012).
    Williams’ first argument is without merit. The district
    court properly held that it could not consider the documentary
    evidence in question as to the merits of the ineffective
    assistance issues because Williams did not submit that
    evidence to the state courts in the manner required under state
    law.
    Williams raised the substance of Claims 1(B) and 1(G) in
    state petitions for post-conviction relief filed in 1984 and
    1992, respectively. The state trial court held evidentiary
    hearings on both claims and denied relief, rulings that the
    Nevada Supreme Court affirmed. Williams did not submit
    any of the documentary evidence at issue here in connection
    with those earlier petitions. He first presented the evidence
    to the state courts in his sixth petition for post-conviction
    relief filed in 2003. The Nevada Supreme Court held that
    Williams’ 2003 petition was untimely under state law and
    therefore refused to consider the new evidence at all.
    The district court correctly held that it could not consider
    the new evidence Williams submitted to the state courts for
    the first time in 2003. As the district court recognized,
    28 U.S.C. § 2254(e)(2) barred it from conducting an
    evidentiary hearing to supplement the state court record on
    Claims 1(B) and 1(G). Section 2254(e)(2) states that if a
    petitioner “has failed to develop the factual basis of a claim
    in State court proceedings, the court shall not hold an
    WILLIAMS V. FILSON                       45
    evidentiary hearing on the claim,” with certain statutory
    exceptions not relevant here. Section 2254(e)(2) bars an
    evidentiary hearing in federal court if the failure to develop
    the factual basis of a claim in state court is attributable to a
    “lack of diligence or some other fault” on the petitioner’s
    part. Williams v. Taylor, 
    529 U.S. 420
    , 434 (2000).
    Here, Williams was not diligent in developing the factual
    basis for Claims 1(B) and 1(G) in state post-conviction
    proceedings. All of the information contained in the
    documentary evidence at issue (which we discuss in greater
    detail below) could have been presented in Williams’ first
    petition for state post-conviction relief in 1984, had his
    counsel been diligent in discovering it. Indeed, the state
    courts refused to consider the new evidence when Williams
    first presented it in 2003 precisely because his post-
    conviction petition was untimely under state law. Thus,
    § 2254(e)(2) required the district court to deny Williams’
    request for an evidentiary hearing.
    Williams’ second argument is predicated on the Supreme
    Court’s decision in Martinez, which was decided after the
    district court’s initial ruling denying relief on Claims 1(B)
    and 1(G). Martinez carved out a narrow exception to the rule
    established in Coleman v. Thompson, 
    501 U.S. 722
    (1991),
    which held that an attorney’s failure to raise a claim at the
    proper time under state law does not provide “cause”
    excusing the resulting procedural default. 
    Id. at 757.
    Martinez created a different rule for ineffective assistance of
    trial counsel claims that, under state law, must be raised in
    “an initial-review collateral 
    proceeding.” 566 U.S. at 17
    .
    With respect to such claims, the Court held that “a procedural
    default will not bar a federal habeas court from hearing a
    substantial claim of ineffective assistance at trial if, in the
    46                  WILLIAMS V. FILSON
    initial-review collateral proceeding, there was no counsel or
    counsel in that proceeding was ineffective.” 
    Id. Williams relies
    on Martinez to make the following
    argument. He contends that under Nevada law, ineffective
    assistance of trial counsel claims must be brought in “an
    initial-review collateral proceeding.” He further argues that
    the new declarations the district court refused to consider
    were of such significance that they effectively transformed
    his ineffective assistance of trial counsel claims into “new”
    claims never presented to the state courts. Those new claims
    were therefore procedurally defaulted, he says, but the default
    is excused under Martinez because his counsel in the first
    post-conviction review proceeding was ineffective for failing
    to properly raise the claims at that time. The district court is
    free, Williams concludes, to consider the new claims now,
    supported by the documentary evidence that the state courts
    refused to consider in 2003.
    Williams’ argument relies on our court’s decision in
    Dickens v. Ryan, 
    740 F.3d 1302
    (9th Cir. 2014) (en banc).
    There, we held that § 2254(e)(2) does not bar a federal habeas
    court from considering new evidence supporting a claim of
    ineffective assistance of trial counsel if the new evidence
    either “fundamentally alter[s] the legal claim already
    considered by the state courts or place[s] the case in a
    significantly different and stronger evidentiary posture than
    it was when the state courts considered it.” 
    Id. at 1318
    (internal quotation marks and citations omitted). In either of
    those scenarios, the new evidence transforms the claim into
    a new claim that the state courts never had an opportunity to
    adjudicate on the merits. The claim is therefore unexhausted
    and, if it can no longer be raised in state court, procedurally
    defaulted as well. It is at that point subject to analysis under
    WILLIAMS V. FILSON                       47
    Martinez to determine if the default can be excused. 
    Id. at 1318
    –19.
    The threshold question, then, is whether the new evidence
    contained in the declarations at issue places Claims 1(B) and
    1(G) in “a significantly different and stronger evidentiary
    posture,” such that under Dickens they must be deemed
    “new” claims not previously presented to the state courts.
    We conclude that the declarations do not have that effect.
    We address Claim 1(B) first, which alleges that O’Neill
    rendered ineffective assistance by failing to prepare an
    adequate defense during the guilt phase. When he presented
    this claim to the state courts in 1984, Williams grounded it
    mainly on allegations that O’Neill was inexperienced and
    overworked, and thus ill-equipped to handle a case of this
    magnitude on her own. Williams alleged that O’Neill was
    just a few years out of law school and had only recently
    joined the public defender’s office. She had little trial
    experience, had no experience representing a defendant in a
    felony case on her own, and had never tried a capital case.
    And while Nevada law permitted the appointment of two
    public defenders to represent a capital defendant, O’Neill did
    not request the assistance of co-counsel. Williams further
    alleged that O’Neill was overworked and distracted because
    the public defender’s office refused to give her a lighter
    workload throughout his case. Because O’Neill suffered
    from a lack of support and experience, Williams argued, she
    was unable to conduct the research and investigation
    necessary to prepare an adequate guilt-phase defense.
    The new evidence Williams submitted to the district court
    in support of this claim does not fundamentally alter the
    nature of the claim or place it in a significantly different and
    48                  WILLIAMS V. FILSON
    stronger evidentiary posture. See 
    id. at 1318.
    For example,
    Williams produced a declaration from an investigator in the
    public defender’s office who worked with O’Neill at the time
    she represented Williams. He states that O’Neill became
    overwhelmed shortly after undertaking the representation,
    and that she never requested his assistance even though he
    was the investigator assigned to Williams’ case. This
    declaration merely expands on Williams’ initial allegation
    that O’Neill was inexperienced and declined to use all of the
    resources at her disposal. As an additional item of new
    evidence, Williams produced a memo from a supervisor in
    the public defender’s office, sent during the period of
    Williams’ representation, stating that due to a staff shortage
    in the office O’Neill could not “switch[]” her cases with other
    attorneys. This memo substantiates but does not alter the
    substance of Williams’ earlier allegation in 1984 that the
    public defender’s office refused to give O’Neill a lighter
    workload to allow her to focus more intently on his case. The
    remaining documents Williams has produced are of a similar
    order. None of the new evidence Williams submitted in
    support of Claim 1(B) had the effect of transforming it into a
    “new” claim distinct from the claim he had earlier presented
    to the state courts.
    We reach the same conclusion with respect to Claim 1(G).
    In that claim, Williams alleges that O’Neill rendered
    ineffective assistance during the penalty phase by failing to
    obtain a medical expert to rebut the State’s evidence of the
    aggravating circumstance of torture. Williams first alleged
    the substance of this claim in state court in 1992. The claim
    relates to the penalty-phase testimony of a pathologist called
    by the State, Dr. Roger Ritzlin, who testified that Ms. Carlson
    suffered several different types of knife wounds during the
    attack: three potentially fatal wounds to the chest; a number
    WILLIAMS V. FILSON                     49
    of defensive wounds on Ms. Carlson’s hands and arms; and
    a third type of wound that Dr. Ritzlin described as “punctate”
    wounds—small, superficial cuts where the skin had been
    punctured, consistent with the victim having been poked with
    a knife. Dr. Ritzlin concluded that these superficial puncture
    wounds were non-fatal and non-defensive in nature. On that
    basis, he concluded that Ms. Carlson had been tortured before
    being killed.
    In his 1992 petition, Williams alleged that reasonably
    competent trial counsel would have consulted with
    independent medical experts and thereby obtained evidence
    refuting Dr. Ritzlin’s testimony that the superficial puncture
    wounds were the product of torture. Had an independent
    expert been consulted, Williams alleged, the expert would
    have testified that the superficial injuries Dr. Ritzlin
    identified were defensive wounds inflicted during the course
    of a struggle, rather than wounds inflicted to torture the
    victim. In particular, Williams alleged that an independent
    expert would have provided the following opinions:
    •   The “superficial” or “torture” wounds
    identified by Dr. Ritzlin are consistent
    with wounds inflicted during a struggle.
    •   The blood splatter patterns in the bedroom
    and the condition of [the] crime scene and
    the nature and frequency of defense
    wounds on the victim demonstrate that the
    killing occurred during a tremendous
    struggle and is inconsistent with a torture
    theory.
    50                  WILLIAMS V. FILSON
    •   The lack of non-stabbing injuries to the
    victim and the location of the so-called
    torture wounds—in the areas of the
    heart—are inconsistent with Dr. Ritzlin’s
    torture theory.
    The new evidence at issue here is a letter report prepared
    by Dr. Donald Reay, a forensic pathologist who reviewed
    (among other things) the autopsy report, autopsy
    photographs, and crime scene photographs, as well as the
    testimony of Dr. Ritzlin. Dr. Reay opined that there was
    nothing to suggest that the superficial puncture wounds
    identified by Dr. Ritzlin were the product of torture. Instead,
    he concluded that the scattered wounds were defensive in
    character, likely suffered during the struggle that occurred
    before the fatal wounds were inflicted. Williams first
    presented Dr. Reay’s report to the state courts in 2003 in
    connection with his sixth state petition for post-conviction
    relief. As noted earlier, the state courts refused to consider
    the evidence on the ground that Williams’ petition was
    untimely.
    In our view, Dr. Reay’s report does not place Claim 1(G)
    in a “significantly different and stronger evidentiary posture”
    than the claim was in when Williams first presented it to the
    state courts in 1992. Dr. Reay’s report, which is less than two
    pages long, adds little to the detailed allegations Williams set
    forth in his 1992 petition. Consistent with Williams’ earlier
    allegations, the report concludes that the injuries Dr. Ritzlin
    identified were likely defensive wounds inflicted during a
    struggle. Indeed, Dr. Reay’s conclusion is based on the same
    factors that Williams identified in his 1992 petition, including
    the superficial and scattered nature of the wounds and the
    absence of any non-stabbing wounds on the victim’s body.
    WILLIAMS V. FILSON                       51
    To be sure, Dr. Reay’s report supports Williams’ previous
    assertions about the conclusions that a medical expert would
    have reached, had one been consulted. But the two-page
    report merely corroborates the detailed allegations set forth in
    Williams’ 1992 petition and thus does not transform Claim
    1(G) into a new and unexhausted claim. See Sivak v.
    Hardison, 
    658 F.3d 898
    , 908 (9th Cir. 2011).
    Accordingly, we affirm the district court’s denial of an
    evidentiary hearing on Claims 1(B) and 1(G).
    D. Claim 16
    In Claim 16, Williams challenges the constitutional
    validity of the “avoid lawful arrest” aggravating
    circumstance, one of the four aggravators originally found by
    the three-judge sentencing panel. At the time of Williams’
    trial, that aggravating circumstance required the State to
    prove that “[t]he murder was committed for the purpose of
    avoiding or preventing a lawful arrest or effecting an escape
    from custody.” Nev. Rev. Stat. § 200.033(5) (1981). The
    State’s theory in this case was that Williams murdered Ms.
    Carlson to avoid and prevent his lawful arrest for the burglary
    of the Carlsons’ home. The sentencing judges found
    sufficient evidence to support that theory. Williams argues
    that Nevada’s avoid-lawful-arrest aggravating circumstance
    is facially invalid under the Eighth Amendment both because
    it is too vague and because it fails to adequately narrow the
    class of death-eligible defendants. He further argues that, as
    applied to him, the aggravating circumstance violates the Ex
    Post Facto Clause and the Fourteenth Amendment’s Due
    Process Clause because he lacked adequate notice at the time
    he committed the offense that § 200.033(5) could be applied
    52                      WILLIAMS V. FILSON
    to the facts of his crime. We do not find these contentions
    meritorious, even reviewing the merits of Claim 16 de novo.4
    We turn first to Williams’ Eighth Amendment arguments.
    He contends that, read most sensibly, § 200.033(5) should be
    understood to apply only when the defendant’s arrest is truly
    imminent, as when a defendant murders a police officer
    attempting to take the defendant into custody. The parties
    agree that the Nevada Supreme Court has rejected that
    reading of the aggravator. See Evans v. State, 
    926 P.2d 265
    ,
    280 (Nev. 1996); Cavanaugh v. State, 
    729 P.2d 481
    , 486
    (Nev. 1986). In Williams’ view, rather than adopt his
    sensible construction of § 200.033(5), the Nevada Supreme
    Court has instead read it to apply whenever a defendant
    murders the victim to prevent her from serving as a witness
    who could later identify the defendant. The problem with
    that reading, Williams asserts, is that the aggravating
    circumstance would apply in virtually every murder case,
    since the victim of the murder could always be a witness if
    allowed to live. Read that broadly, the aggravating
    circumstance would likely violate the Eighth Amendment, for
    the Supreme Court has held that aggravating circumstances
    must “genuinely narrow the class of persons eligible for the
    death penalty.” Romano v. Oklahoma, 
    512 U.S. 1
    , 7 (1994)
    (internal quotation marks omitted). Stated differently, an
    aggravating circumstance “may not apply to every defendant
    convicted of murder; it must apply only to a subclass of
    4
    Like the district court, we review the arguments raised in Claim 16
    de novo because the Nevada Supreme Court never issued a ruling on the
    merits of the claim. That is because Williams likely procedurally
    defaulted the claim by not raising it on direct appeal, or even in his first
    state petition for post-conviction relief. However, the State never asserted
    procedural default as a defense to this claim in the district court and has
    not asserted it as a defense on appeal.
    WILLIAMS V. FILSON                       53
    defendants convicted of murder.” Tuilaepa v. California,
    
    512 U.S. 967
    , 972 (1994).
    The Nevada Supreme Court, however, has construed
    § 200.033(5) more narrowly than Williams suggests. We
    have found no case in which the court adopted the broad,
    constitutionally problematic reading that Williams posits.
    Instead, the Nevada Supreme Court has upheld application of
    the aggravating circumstance only when the State has proved
    that the defendant committed murder for the purpose of
    preventing the victim from serving as a witness to some
    antecedent crime (separate from the murder) that the
    defendant committed. See, e.g., Jeremias v. State, 
    412 P.3d 43
    , 55 (Nev. 2018); Blake v. State, 
    121 P.3d 567
    , 577 (Nev.
    2005); Domingues v. State, 
    917 P.2d 1364
    , 1375–77 (Nev.
    1996); 
    Cavanaugh, 729 P.2d at 486
    . That is the same
    limiting construction other States have adopted for their own,
    similarly worded avoid-lawful-arrest aggravators. See, e.g.,
    Thompson v. State, 
    648 So. 2d 692
    , 695 (Fla. 1994) (per
    curiam); People v. Davis, 
    794 P.2d 159
    , 187 n.22 (Colo.
    1990), overruled on other grounds by People v. Miller,
    
    113 P.3d 743
    (Colo. 2005). We agree with the Eighth and
    Tenth Circuits that such a limiting construction adequately
    narrows the class of defendants rendered eligible for the death
    penalty. See Davis v. Executive Director of the Department
    of Corrections, 
    100 F.3d 750
    , 769 (10th Cir. 1996);
    Wainwright v. Lockhart, 
    80 F.3d 1226
    , 1231 (8th Cir. 1996).
    Williams next contends that the Nevada Supreme Court
    has inconsistently applied this limiting construction, such that
    the avoid-lawful-arrest aggravator is unconstitutionally
    vague. According to Williams, the Nevada Supreme Court
    has upheld application of the circumstance in some cases
    involving a defendant who murdered the victim after
    54                  WILLIAMS V. FILSON
    committing an antecedent crime, but has arbitrarily rejected
    application of the circumstance in other cases with the same
    facts. We do not read the cases as exhibiting this kind of
    arbitrariness in application. What they demonstrate is that the
    Nevada Supreme Court requires the State to produce evidence
    from which the factfinder can reasonably infer that the
    defendant committed the murder for the purpose of
    eliminating the victim as a witness for an antecedent crime.
    Where such proof exists, the court has upheld application of
    the aggravating circumstance. See, e.g., Randolph v. State,
    
    36 P.3d 424
    , 437 (Nev. 2001); 
    Cavanaugh, 729 P.2d at 486
    .
    And where the court viewed such proof as lacking, it has
    rejected application of the circumstance. See, e.g., Witter v.
    State, 
    921 P.2d 886
    , 900 (Nev. 1996), overruled on other
    grounds by Byford v. State, 
    994 P.2d 700
    (Nev. 2000);
    Jimenez v. State, 
    775 P.2d 694
    , 698 (Nev. 1989). None of
    these factbound decisions renders the avoid-lawful-arrest
    aggravating circumstance unconstitutionally vague.
    Williams makes one final argument that warrants
    discussion. He notes that, at the time he committed his
    offense, the Nevada Supreme Court had not yet held that
    § 200.033(5) could be applied in a case like his, involving the
    murder of a witness, as opposed to someone actually involved
    in effectuating the defendant’s arrest. The court first upheld
    application of the aggravating circumstance in a case
    involving the murder of a witness more than four years after
    Williams’ offense, in Cavanaugh v. State, 
    729 P.2d 481
    (Nev.
    1986). Williams argues that he lacked fair notice that the
    avoid-lawful-arrest aggravator could be applied to the facts of
    his case, and that any attempt to uphold application of the
    aggravator based on the Nevada Supreme Court’s subsequent
    interpretation of it would violate the Ex Post Facto Clause.
    WILLIAMS V. FILSON                       55
    Judicial interpretation of a criminal statute may not be
    applied retroactively if the court’s decision is “unexpected
    and indefensible by reference to the law which had been
    expressed prior to the conduct in issue.” Bouie v. City of
    Columbia, 
    378 U.S. 347
    , 354 (1964). We cannot say that the
    Nevada Supreme Court’s interpretation of § 200.033(5)
    constitutes an “unexpected and indefensible” break with prior
    Nevada law. Williams has identified no pre-Cavanaugh
    authority from Nevada courts that is inconsistent with the rule
    Cavanaugh adopted, and we have found none. Indeed,
    Cavanaugh’s interpretation of § 200.033(5) accords with a
    1978 decision from the Florida Supreme Court interpreting a
    nearly identical statute, which indicates that the interpretation
    adopted by the Nevada Supreme Court in Cavanaugh reflects
    a reading of the provision’s text that could reasonably have
    been expected. See Riley v. State, 
    366 So. 2d 19
    , 22 (Fla.
    1978).
    E. Adequacy of Nevada’s Timeliness Bar
    The district court held that many of Williams’ claims are
    procedurally defaulted under Nevada Revised Statutes
    § 34.726. That provision imposes a general one-year
    deadline for the filing of petitions for post-conviction relief.
    As noted above, Williams filed his sixth and final state
    petition for post-conviction relief in March 2003 to exhaust
    certain of his federal claims. The Nevada Supreme Court
    declined to consider most of the claims raised in the 2003
    petition on the ground that they were untimely under
    § 34.726. In the district court, the State moved to dismiss the
    vast majority of Williams’ claims, contending that § 34.726
    is an independent and adequate state procedural rule that bars
    federal habeas review. The district court granted the State’s
    motion to dismiss as to many of the claims raised in
    56                  WILLIAMS V. FILSON
    Williams’ third amended federal habeas petition. Williams
    contends that § 34.726 is neither adequate to support the
    judgment nor independent of federal law and therefore cannot
    preclude federal review.
    Under the procedural bar doctrine, a state court’s
    application of a procedural rule can preclude federal habeas
    review only if the rule is independent of federal law and
    adequate to support the judgment. 
    Coleman, 501 U.S. at 729
    –30. To be adequate, the rule must be “firmly established
    and regularly followed” at the time of the purported default.
    Beard v. Kindler, 
    558 U.S. 53
    , 60 (2009) (quoting Lee v.
    Kemna, 
    534 U.S. 362
    , 376 (2002)). The State bears the initial
    burden of pleading the existence of a state procedural ground.
    Bennett v. Mueller, 
    322 F.3d 573
    , 585–86 (9th Cir. 2003). If
    a state procedural ground exists, the burden then shifts to the
    petitioner, who must assert “specific factual allegations that
    demonstrate the inadequacy of the state procedure, including
    citation to authority demonstrating inconsistent application of
    the rule.” 
    Id. at 586.
    If the petitioner carries his burden, the
    burden shifts back to the State, which must show that the
    procedural rule “has been regularly and consistently applied
    in habeas actions.” 
    Id. The State
    has satisfied its initial burden by pleading the
    existence of a procedural rule—§ 34.726—that, if applicable,
    is adequate to support the state court’s judgment. In its order
    affirming the denial of Williams’ final state habeas petition,
    the Nevada Supreme Court held that the petition was
    untimely because it was filed 16 years after the resolution of
    Williams’ direct appeal. The court determined that Williams
    could not show good cause to excuse his procedural default.
    WILLIAMS V. FILSON                        57
    Under Bennett, Williams bears the burden of “asserting
    specific factual allegations that demonstrate the inadequacy
    of the state procedure.” 
    Id. In an
    attempt to meet this burden,
    Williams contends that the rule was not clearly established or
    consistently applied at the time of his default. He also argues
    that his claims are not defaulted because the Nevada Supreme
    Court addressed them on the merits, and its decision was thus
    dependent on federal law.
    To determine whether § 34.726 is a procedural bar to
    federal review, we must examine how the rule was applied
    “at the time the claim should have been raised.” Fields v.
    Calderon, 
    125 F.3d 757
    , 760 (9th Cir. 1997) (quoting
    Calderon v. U.S. District Court, 
    103 F.3d 72
    , 75 (9th Cir.
    1996)). This date, known as the “trigger date,” 
    id., is not
    as
    simple to pin down here as in some of our prior cases. That
    is because the one-year time bar imposed by § 34.726 did not
    take effect until January 1, 1993. By that time, Williams had
    already filed five state post-conviction petitions. So the only
    petition that could have been rendered untimely by § 34.726
    is his sixth and final petition, which he did not file until 2003.
    In 2001, the Nevada Supreme Court held for the first time
    that § 34.726 applies to petitioners who had already filed a
    petition for post-conviction relief prior to § 34.726’s effective
    date. In Pellegrini v. State, 
    34 P.3d 519
    (Nev. 2001),
    abrogated on other grounds by Rippo v. State, 
    423 P.3d 1084
    ,
    1097 n.12 (Nev. 2018), the court held that petitioners seeking
    to file timely successive petitions had one year from
    § 34.726’s effective date in which to do so. 
    Id. at 529.
    Under
    Pellegrini’s holding, then, Williams had until January 1,
    1994, to file his sixth and final state court petition.
    58                   WILLIAMS V. FILSON
    Williams argues that it was not possible for him to
    comply with the 1994 deadline announced in Pellegrini
    because that case was not decided until 2001, long after the
    deadline had passed. This argument would have greater force
    if Williams had moved swiftly to comply with Pellegrini.
    But he did not. Pellegrini was decided on November 15,
    2001, and Williams did not file his sixth state court petition
    until March 6, 2003, more than 15 months later. The district
    court held that Williams’ default occurred from January 1,
    1994, the date by which Williams was required to file his
    successive petition, through March 6, 2003, the date he filed
    his last state court petition. But even if we were to restart the
    clock from the date that Pellegrini was decided, Williams’
    delay was more than the applicable one-year limit, and so
    constituted post-Pellegrini default. See 
    Bennett, 322 F.3d at 579
    (holding that petitioner’s substantial delay after the
    California Supreme Court announced a new procedural rule
    constituted a period of “continuous” default).
    Williams identifies a number of cases in an attempt to
    establish that § 34.726 has been inconsistently applied. We
    note at the outset that two of the cases, Rippo v. State,
    
    146 P.3d 279
    (Nev. 2006), and Middleton v. Warden, 
    98 P.3d 694
    (Nev. 2004), were decided after either default date and so
    are not relevant to our analysis. See 
    Fields, 125 F.3d at 761
    (explaining that the trigger date is the date the default
    occurred, not the date the rule was applied by the state court).
    We note also that, if we were to restart the clock from the
    date that Pellegrini was decided, all but one of the cases
    Williams cites would fall outside the relevant time period.
    In any event, the cases decided within either relevant time
    period do little to help Williams. In Bejarano v. Warden,
    
    929 P.2d 922
    (Nev. 1996), the Nevada Supreme Court
    WILLIAMS V. FILSON                       59
    dismissed a successive post-conviction petition after applying
    a different procedural rule, not the timeliness bar of § 34.726.
    The court added in a footnote that it had considered a claim
    that the petitioner’s counsel was ineffective and “determined
    that [the claim] is without merit.” 
    Id. at 926
    n.2. But this
    isolated and passing reference does not demonstrate that the
    particular state procedural rule here at issue was inadequate.
    See Moran v. McDaniel, 
    80 F.3d 1261
    , 1269 (9th Cir. 1996)
    (explaining that a “brief reference to the record does not
    establish that the Nevada Supreme Court inconsistently
    applies that state’s procedural bar rule”). Indeed, as the
    Nevada Supreme Court later explained, the Bejarano court’s
    reference to the “merits” of the petitioner’s claim was not a
    decision on the merits; rather, the court was clarifying that the
    petitioner had failed to show prejudice sufficient to overcome
    procedural bars. See State v. Eighth Judicial District Court
    ex rel. County of Clark, 
    112 P.3d 1070
    , 1079 (Nev. 2005)
    (County of Clark).
    Williams’ reliance on Hill v. State, 
    953 P.2d 1077
    (Nev.
    1998), is equally unavailing. In Hill, the Nevada Supreme
    Court reached the merits of an ineffective assistance of
    counsel claim without discussing procedural bars. Although
    the ineffective assistance claim was raised more than one year
    after Hill’s conviction, the Nevada Supreme Court stated that
    Hill’s petition was, in fact, timely filed. 
    Id. at 1081.
    The
    Nevada Supreme Court later clarified in Pellegrini that Hill’s
    petition was timely under § 34.726 because the court
    construed the petition as a timely re-filed or renewed first
    petition. 
    Pellegrini, 34 P.3d at 535
    .
    Next, Williams cites Ford v. Warden, 
    901 P.2d 123
    (Nev.
    1995). However, we have previously held that Ford is “not
    60                  WILLIAMS V. FILSON
    relevant” to the question whether § 34.726 has been applied
    inconsistently. See 
    Moran, 80 F.3d at 1270
    .
    Nor does Williams’ citation of unpublished authority
    undermine the adequacy of § 34.726. In Farmer v. State, No.
    29120, Order Dismissing Appeal (Nev. Nov. 20, 1997), the
    Nevada Supreme Court did not discuss § 34.726 because it
    denied a post-conviction petition on a different procedural
    ground. No. 2:98-cv-00056, Dkt. No. 136-5, at 47.
    Similarly, in Nevius v. Warden, Nos. 29027, 29028, Order
    Dismissing Appeal and Denying Petition for Writ of Habeas
    Corpus (Nev. Oct. 9, 1996), the Nevada Supreme Court
    explained that it was disposing of the petitioner’s claims on
    other procedural grounds, and that its discussion of the merits
    was “strictly for the purpose of demonstrating that [Nevius]
    cannot overcome his procedural defaults by a showing of
    actual prejudice.” A reference to the merits of a petition for
    purposes of determining whether prejudice can excuse a
    procedural bar does not constitute a decision on the merits
    inconsistent with the application of a procedural bar. See
    
    Moran, 80 F.3d at 1269
    . Finally, in Feazell v. State, No.
    37789, Order Affirming in Part and Vacating in Part (Nev.
    Nov. 14, 2002), the only case cited by Williams that was
    decided within a year of Pellegrini, the Nevada Supreme
    Court vacated the petitioner’s capital sentence and remanded
    for resentencing without referencing the timeliness bar under
    § 34.726. No. 2:98-cv-00056, Dkt. No. 136-5, at 52–60. But
    the Nevada Supreme Court later explained that there was
    good cause to excuse Feazell’s late filing. See County of
    
    Clark, 112 P.3d at 1080
    .
    Even if the cited authority could be deemed sufficient to
    satisfy Williams’ burden under Bennett, the State has carried
    its “ultimate burden” of showing that the state rule “has been
    WILLIAMS V. FILSON                       61
    regularly and consistently applied” throughout both relevant
    time periods. 
    Bennett, 322 F.3d at 586
    . At most, the cases
    Williams identifies show that the Nevada Supreme Court has
    occasionally exercised its discretion to consider the merits of
    untimely petitions. But “a discretionary rule can be ‘firmly
    established’ and ‘regularly followed’—even if the appropriate
    exercise of discretion may permit consideration of a federal
    claim in some cases but not others.” 
    Beard, 558 U.S. at 60
    –61. For its part, the State has identified a number of
    cases, both pre- and post-Pellegrini, demonstrating that the
    Nevada Supreme Court has regularly applied § 34.726 to bar
    untimely petitions. These decisions show that the Nevada
    Supreme Court has applied the timeliness rule “in the vast
    majority” of cases to which the rule applies. Scott v. Schriro,
    
    567 F.3d 573
    , 580 (9th Cir. 2009) (per curiam) (internal
    quotation marks omitted).
    Because Nevada Revised Statutes § 34.726 is an
    independent and adequate state procedural bar to federal
    review, we affirm the district court’s order dismissing the
    following claims: 3, 5–7, 10–13, 15, and 17–38.
    The district court also initially dismissed several of
    Williams’ ineffective assistance of counsel claims—Claims
    1(D), 1(E), 1(H), 1(I), and 1(J)—on the basis that they, too,
    were procedurally defaulted under § 34.726. After the
    Supreme Court issued its decision in Martinez, the district
    court recognized that Williams might be able to show cause
    for this default if he could establish ineffective assistance of
    post-conviction counsel. However, the district court
    concluded that these defaulted ineffective assistance of
    counsel claims were also time-barred under AEDPA’s one-
    year statute of limitations, and so it declined to conduct a
    Martinez analysis. As explained above in section II.A,
    62                  WILLIAMS V. FILSON
    Williams is entitled to equitable tolling of AEDPA’s statute
    of limitations, so all of the claims asserted in his September
    1999 amended petition are timely under AEDPA. We
    therefore reverse the dismissal of Claims 1(D), 1(E), 1(H),
    1(I), and 1(J) and remand for the district court to determine in
    the first instance whether Williams’ procedural default is
    excused under Martinez.
    F. Rule 60(b) Motion
    After the district court entered final judgment in 2012,
    Williams filed a motion under Federal Rule of Civil
    Procedure 60(b) raising a new argument based on Hurst v.
    Florida, 
    136 S. Ct. 616
    (2016). According to Williams,
    Hurst established a new rule in capital sentencing
    proceedings requiring the factfinder to determine that the
    aggravating circumstances outweigh the mitigating
    circumstances beyond a reasonable doubt. In his Rule 60(b)
    motion, he argued that this new rule entitles him to relief
    because the Nevada Supreme Court did not apply the beyond-
    a-reasonable-doubt standard when it conducted its reweighing
    analysis in 2006 and 2007. The district court denied
    Williams’ motion on the ground that it was a disguised
    second or successive federal habeas petition. Our court
    subsequently granted Williams a certificate of appealability
    on that issue.
    Williams challenges the district court’s denial of his Rule
    60(b) motion in Case No. 17-15768. As a backup, he has also
    filed an application for leave to file a second or successive
    petition under 28 U.S.C. § 2244(b)(3) in Case No. 17-71510.
    We find it unnecessary to decide whether Williams’ Rule
    60(b) motion was a disguised second or successive petition.
    WILLIAMS V. FILSON                      63
    To expedite resolution of these proceedings, we will assume
    without deciding that it was not, and that the district court
    was therefore permitted to rule on the motion. See Jones v.
    Ryan, 
    733 F.3d 825
    , 838 (9th Cir. 2013). On the merits,
    however, it is clear under Ybarra v. Filson, 
    869 F.3d 1016
    (9th Cir. 2017), that Williams is not entitled to relief. In
    Ybarra, we held that even if Hurst established the new rule
    Williams urges, that rule would not apply retroactively in
    cases like this one on collateral review. 
    Id. at 1033.
    Moreover, Williams is not entitled to relief for the additional
    reason that his Rule 60(b) motion rests on an incorrect factual
    premise. When the Nevada Supreme Court conducted its
    reweighing analysis, it expressly applied the beyond-a-
    reasonable-doubt standard: “After reweighing here, we
    conclude beyond a reasonable doubt that absent the erroneous
    aggravators the sentencing panel would have found Williams
    death eligible and imposed a sentence of death.”
    We affirm the district court’s denial of Williams’ Rule
    60(b) motion. We deny his application to file a second or
    successive petition under 28 U.S.C. § 2244(b)(3).
    III. Conclusion
    In Case No. 13-99002, we AFFIRM in part, REVERSE
    in part, and REMAND for further proceedings. In
    particular, we conclude that the district court erred by
    denying Williams equitable tolling, which requires us to
    reverse the court’s dismissal of Claims 1(C), 1(D), 1(E),
    1(H), 1(I), 1(J), 9, and 14 and remand for further proceedings
    as to those claims. We reverse the district court’s denial of
    Williams’ request for an evidentiary hearing on Claim 1(F)
    and remand for the district court to conduct an evidentiary
    hearing as to that claim. We affirm the district court’s denial
    64                   WILLIAMS V. FILSON
    of Williams’ third amended habeas petition in all other
    respects.
    In Case No. 17-15768, we AFFIRM the district court’s
    denial of Williams’ motion under Federal Rule of Civil
    Procedure 60(b).
    In Case No. 17-71510, we DENY Williams’ application
    to file a second or successive federal habeas petition.
    The parties shall bear their own costs on appeal.