Thomas v. Horn ( 2009 )


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  •                                                                                                                            Opinions of the United
    2009 Decisions                                                                                                             States Court of Appeals
    for the Third Circuit
    7-1-2009
    Thomas v. Horn
    Precedential or Non-Precedential: Precedential
    Docket No. 05-9006
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    PRECEDENTIAL
    UNITED STATES COURT OF APPEALS
    FOR THE THIRD CIRCUIT
    ______________________
    Nos. 05-9006 & 05-9008
    ______________________
    BRIAN THOMAS,
    Appellant in No. 05-9006
    v.
    MARTIN HORN, Commissioner, Pennsylvania Department
    of Corrections; DONALD T. VAUGHN, Superintendent of
    the State Correctional Institution at Graterford; JOSEPH P.
    MAZURKIEWICZ, Superintendent of the State Correctional
    Institution at Rockview; THE DISTRICT ATTORNEY OF
    PHILADELPHIA COUNTY
    Appellants in No. 05-9008
    On Appeal from the United States District Court
    for the Eastern District of Pennsylvania
    District Court No. 00-cv-803
    District Judge: The Honorable Louis H. Pollak
    Argued May 1, 2009
    Before: MCKEE, SMITH, and STAPLETON, Circuit Judges
    (Filed: July 1, 2009)
    Maureen Kearney Rowley
    Billy H. Nolas (Argued)
    Victor Abreu
    David Wycoff
    Federal Community Defender Office for the Eastern District
    of Pennsylvania
    Suite 545 West—The Curtis Building
    601 Walnut Street
    Philadelphia, PA 19106
    Attorneys for Brian Thomas
    David Curtis Glebe (Argued)
    Thomas W. Dolgenos
    Ronald Eisenberg
    Arnold H. Gordon
    Lynne Abraham
    Robert M. Falin
    Three South Penn Square
    Philadelphia, PA 19107
    Attorneys for Martin Horn, Donald Vaughn,
    Joseph Mazurkiewicz, and the District Attorney
    of Philadelphia County
    2
    OPINION
    SMITH, Circuit Judge.
    In 1986, Brian Thomas was convicted in the Court of
    Common Pleas of Philadelphia of murder in the first degree,
    burglary, involuntary deviate sexual intercourse, and rape. The
    jury sentenced him to death. Thomas was unsuccessful on direct
    appeal, see Commonwealth v. Thomas, 
    561 A.2d 699
    (Pa. 1989)
    (hereinafter “Thomas I”), and in his state court petition for post-
    conviction relief, see Commonwealth v. Thomas, 
    744 A.2d 713
    (Pa. 2000) (hereinafter “Thomas II”). Thomas then petitioned
    the District Court for habeas relief pursuant to 28 U.S.C. § 2254.
    Thomas v. Beard, 
    388 F. Supp. 2d 489
    (E.D. Pa. 2005)
    (hereinafter “Thomas III”). The District Court granted Thomas
    sentencing relief based on his trial counsel’s ineffectiveness, but
    denied his guilt-phase claims. 
    Id. at 536.
    Both Thomas and the
    Commonwealth1 appealed. For the reasons that follow, we will
    affirm the District Court’s guilt-phase determinations, but will
    vacate the District Court’s order for sentencing relief, and
    1
    We refer to Martin Horn, Donald Vaughn, Joseph
    Mazurkiewicz, and the District Attorney of Philadelphia County
    collectively as the “Commonwealth.”
    3
    remand for an evidentiary hearing concerning the extent, if any,
    of trial counsel’s pre-sentencing investigative efforts to obtain
    mitigation evidence.
    I.
    On August 9, 1985, one of Linda Johnson’s roommates
    walked into their Philadelphia apartment and found Johnson’s
    dead body lying face-down on a broken box-spring in her room.
    Johnson’s eyes and face were swollen, and her nose and right
    temple were bleeding. She had a bite mark on her cheek and
    bruises on her arms and thighs. She was naked from the waist
    down, and blood was seeping from her vagina and rectum. A
    blood-encrusted crutch was found near her body. It was also
    determined that a television set and a can containing about
    twenty-nine dollars in change were missing from the apartment.
    An autopsy of Johnson revealed that she had three
    fractured ribs and a twenty-three inch tear inside her body that
    reached from her vagina to her chest cavity. A shirt also had
    been inserted into her rectum, through her intestinal wall, and
    into her abdominal cavity with a blunt instrument while she was
    still alive. Additionally, sperm was found inside her vagina.
    Three days after the discovery of Johnson’s body, the
    Commonwealth arrested Thomas for her rape and murder, and
    for burglarizing her apartment. At trial, three witnesses testified
    that they had seen Thomas and Johnson together at or near her
    4
    apartment within hours of the discovery of her body. The
    Commonwealth also introduced medical evidence that: the
    sperm found in Johnson’s vagina was deposited around the time
    that Thomas and Johnson were last seen together; the sperm was
    deposited by a non-secretor (one who does not secrete traces of
    blood in bodily emissions); Thomas was a non-secretor; blood
    found on Thomas’ boxer shorts was human blood; and the bite
    mark on Johnson’s cheek matched Thomas’ teeth. Finally, the
    Commonwealth introduced evidence that Thomas was in
    possession of both the missing television and the twenty-nine
    dollars in change.
    On February 6, 1986, the jury found Thomas guilty of
    murder in the first degree, rape, involuntary deviate sexual
    intercourse, and burglary. During the penalty phase, which
    began later that day, the Commonwealth offered evidence of
    three aggravating circumstances to support its request for the
    death penalty: 1) killing while perpetrating another felony,
    namely rape; 2) killing by means of torture; and 3) a significant
    history of violent felony convictions. See 42 Pa. Cons. Stat. §
    9711(d)(6), (8), (9). The Commonwealth relied on trial
    evidence already presented to establish the first two aggravating
    circumstances. To establish the third, the Commonwealth
    offered evidence of Thomas’ 1978 conviction for felonious
    aggravated assault and indecent assault on a three-year old,
    which caused injuries to the child’s rectum and intestines, and
    Thomas’ 1984 conviction for criminal trespass where Thomas
    unlawfully entered a neighbor’s bedroom while she was
    5
    sleeping.
    At the close of the Commonwealth’s penalty-phase
    evidence, Thomas’ court-appointed counsel informed the court
    that Thomas would not be presenting any mitigating evidence.
    The court determined that Thomas should be colloquied
    regarding the decision to present no mitigating evidence. After
    this colloquy, Thomas, through his counsel, declined the
    Commonwealth’s offer to stipulate to his age and to the fact that
    he graduated from high school. As a result, Thomas presented
    no evidence of mitigating circumstances during the penalty
    phase. Nonetheless, in its penalty-phase charge to the jury, the
    court recited all the mitigating circumstances listed in
    Pennsylvania’s sentencing statute for first-degree murder, 42 Pa.
    Cons. Stat. § 9711(e), and told the jury that “you may consider
    anything as a mitigating circumstance.”
    The jury found the three proposed aggravating
    circumstances and no mitigating circumstances. Accordingly,
    Thomas was sentenced to death on the first-degree murder
    conviction and to consecutive terms of imprisonment of up to
    fifty years for the burglary, rape, and involuntary deviate sexual
    intercourse convictions.
    Thomas, represented by new court-appointed appellate
    counsel, unsuccessfully challenged his conviction and sentence
    on direct appeal to the Pennsylvania Supreme Court. Thomas 
    I, 561 A.2d at 710
    . His subsequent petition for relief under
    6
    Pennsylvania’s Post-Conviction Relief Act, 42 Pa. Cons. Stat.
    § 9541 et. seq. (hereinafter “PCRA”), was also denied. Thomas
    
    II, 744 A.2d at 717
    . Thomas then petitioned the District Court
    for habeas relief pursuant to 28 U.S.C. § 2254, raising twenty-
    three grounds for relief. Thomas 
    III, 388 F. Supp. 2d at 495
    –96
    & n.1. The District Court denied Thomas’ petition as to his
    guilt-phase claims. 
    Id. at 536.
    The District Court, however,
    determined that Thomas’ trial counsel was ineffective at
    sentencing under Strickland v. Washington, 
    466 U.S. 668
    (1984), because counsel failed to investigate and present
    mitigating evidence of Thomas’ mental health. Thomas 
    III, 388 F. Supp. 2d at 505
    –11. The District Court also determined that
    Thomas did not knowingly and intelligently waive his right to
    present mitigating evidence because the nature of the
    proceedings were not adequately explained to him, so the
    purported waiver could not cure the prejudice resulting from
    counsel’s deficiencies. 
    Id. at 513–16.2
    Accordingly, the District
    2
    The District Court also determined that counsel’s
    “incoherent” closing argument at sentencing exacerbated the
    prejudice caused by counsel’s other deficient performances.
    Thomas 
    III, 388 F. Supp. 2d at 511
    –513. Although we agree
    with the District Court that “counsel’s closing was, at best,
    incoherent and, at worst, in the service of the prosecution’s
    contention that the jury should select death rather than life
    imprisonment” and that “[c]ounsel wholly failed in his duty to
    present a closing argument helpful to Thomas,” 
    id. at 513,
    it
    does not appear that Thomas raised these claims in his habeas
    7
    Court vacated Thomas’ death sentence. 
    Id. at 536.
    3
    Thomas filed a timely appeal, and the District Court
    issued a certificate of appealability for three of Thomas’ claims.
    The Commonwealth filed a cross-appeal alleging that the
    District Court’s decision to vacate Thomas’ sentence was in
    error.
    II.
    The District Court had jurisdiction under 28 U.S.C. §§
    2241 and 2254, and we have jurisdiction under 28 U.S.C. §§
    1291 and 2253. Since the District Court ruled on Thomas’
    habeas petition without an evidentiary hearing, our review of its
    decision is plenary. See Marshall v. Hendricks, 
    307 F.3d 36
    , 50
    (3d Cir. 2002). This means that we review the state courts’
    determinations under the same standard that the District Court
    was required to apply. 
    Id. petition, see
    id. at 495–96, 
    498. Therefore, we will not address
    counsel’s closing argument in our review.
    3
    In light of its decision to vacate Thomas’ sentence on
    the basis of Thomas’ Strickland claim, the District Court
    dismissed, without prejudice, two of Thomas’ other claims: per
    se ineffective assistance of counsel under United States v.
    Cronic, 
    466 U.S. 648
    (1984), and jury bias at 
    sentencing. 388 F. Supp. 2d at 516
    , 528–30.
    8
    Under the Antiterrorism and Effective Death Penalty Act
    of 1996 (“AEDPA”), “federal courts are to review a state court’s
    determinations on the merits only to ascertain whether the state
    court reached a decision that was ‘contrary to’ or involved an
    ‘unreasonable application’ of clearly established Supreme Court
    law, or if a decision was based on an ‘unreasonable
    determination’ of the facts in light of the evidence presented.”
    Fahy v. Horn, 
    516 F.3d 169
    , 189 n.20 (3d Cir. 2008). But when
    “the state court has not reached the merits of a claim thereafter
    presented to a federal habeas court, the deferential standards
    provided by AEDPA . . . do not apply.” Appel v. Horn, 
    250 F.3d 203
    , 210 (3d Cir. 2001). “In such an instance, the federal
    habeas court must conduct a de novo review over pure legal
    questions and mixed questions of law and fact, as a court would
    have done prior to the enactment of AEDPA.” 
    Id. A state
    court’s factual determinations, however, “are still presumed to
    be correct, rebuttable upon a showing of clear and convincing
    evidence.” 
    Id. III. We
    will first address the three claims before us on
    Thomas’ appeal: 1) the trial court’s “reasonable doubt”
    instruction to the jury was unconstitutional; 2) the
    Commonwealth’s closing argument at sentencing was
    unconstitutional, and Thomas’ counsel was ineffective for not
    objecting to it; and 3) Thomas’ counsel was ineffective for
    failing to life-qualify the jury.
    9
    A.
    At the outset, the parties contest whether AEDPA
    deference pursuant to Section 2254(d) applies to Thomas’
    claims. Section 2254(d) “applies only to claims already
    ‘adjudicated on the merits in State court proceedings.’” 
    Appel, 250 F.3d at 210
    (quoting 28 U.S.C. § 2254(d)). Here, the PCRA
    court ruled on the merits of two of Thomas’ claims—his closing
    argument and life-qualification claims—but did not address the
    third—his objection to the reasonable doubt instruction. On
    appeal, the Pennsylvania Supreme Court dismissed all three
    claims as waived because they were not raised in Thomas’
    amended PCRA petition. See Thomas 
    II, 744 A.2d at 715
    n.4.
    The Commonwealth argues that the PCRA court’s decision on
    the merits is an “adjudicat[ion] on the merits in State court
    proceedings,” which renders Section 2254(d) applicable to two
    of Thomas’ claims. Thomas, however, contends that the
    Pennsylvania Supreme Court’s determination supercedes the
    PCRA court’s decision for the purposes of determining whether
    AEDPA deference is due. Accordingly, we must decide
    whether a claim has been “adjudicated on the merits in State
    court proceedings” when a lower state court decided the claim
    on its merits, but the reviewing state court resolved the claim
    entirely on procedural grounds.
    The Second Circuit has provided a textual analysis of
    “adjudicated on the merits” as used in Section 2254(d):
    10
    When Congress uses a term of art such as
    “adjudicated on the merits,” we presume that it
    speaks consistently with the commonly
    understood meaning of this term. See [Walters v.
    Metro. Educ. Enters., Inc., 
    519 U.S. 202
    , 207
    (1997)]. “Adjudicated on the merits” has a well
    settled meaning: a decision finally resolving the
    parties’ claims, with res judicata effect, that is
    based on the substance of the claim advanced,
    rather than on a procedural, or other, ground. See
    e.g., Semtek Int’l, Inc. v. Lockheed Martin Corp.,
    
    531 U.S. 497
    . . . (2001) (noting one definition of
    an “on the merits” adjudication as “one that
    actually passes directly on the substance of a
    particular claim before the court”) (internal
    quotation marks and alterations omitted). See
    also, e.g., Black’s Law Dictionary 42 (7th ed.
    1999) (adjudication: “1. The legal process of
    resolving a dispute; the process of judicially
    deciding a case. 2. Judgment.”; adjudicate: “1. To
    rule upon judicially. 2. Adjudge.”); Webster’s
    Third New Int’l Dictionary 27 (1993) (adjudicate:
    “to settle finally (the rights and duties of the
    parties to a court case) on the merits of issues
    raised; enter on the records of a court (a final
    judgment, order, or decree of sentence)”).
    Sellan v. Kuhlman, 
    261 F.3d 303
    , 311 (2d Cir. 2001). In
    Rompilla v. Horn, 
    355 F.3d 233
    (3d Cir. 2004), rev’d on other
    grounds sub nom. Rompilla v. Beard, 
    545 U.S. 374
    (2005), we
    11
    quoted with approval the Second Circuit’s interpretation of
    “adjudicated on the merits.” 
    Id. at 247
    (quoting 
    Sellan, 261 F.3d at 311
    ). Other courts of appeals have done so as well. See Teti
    v. Bender, 
    507 F.3d 50
    , 56–57 (1st Cir. 2007); Lambert v.
    Blodgett, 
    393 F.3d 943
    , 969 (9th Cir. 2004); see also Muth v.
    Frank, 
    412 F.3d 808
    , 815 (7th Cir. 2005); Schoenberger v.
    Russell, 
    290 F.3d 831
    , 840 (6th Cir. 2002) (Keith, J.,
    concurring).
    We reiterate today our approval of the Second Circuit’s
    interpretation of “adjudicated on the merits.” For the purposes
    of Section 2254(d), a claim has been “adjudicated on the merits
    in State court proceedings” when a state court has made a
    decision that 1) finally resolves the claim, and 2) resolves the
    claim on the basis of its substance, rather than on a procedural,
    or other, ground. See 
    Rompilla, 355 F.3d at 247
    (quoting 
    Sellan, 261 F.3d at 311
    ); see also 
    Lambert, 393 F.3d at 969
    (“[A] state
    has ‘adjudicated’ a petitioner’s constitutional claim ‘on the
    merits’ for purposes of § 2254(d) when it has decided the
    petitioner’s right to post conviction relief on the basis of the
    substance of the constitutional claim advanced, rather than
    denying the claim on the basis of a procedural or other rule
    precluding state court review of the merits.”); 
    Sellan, 261 F.3d at 312
    (“For the purposes of AEDPA deference, a state court
    ‘adjudicate[s]’ a state prisoner’s federal claim on the merits
    when it (1) disposes of the claim ‘on the merits,’ and (2) reduces
    its disposition to judgment.”).
    12
    We agree with the Commonwealth that an “adjudication
    on the merits” can occur at any level of state court. Unlike other
    statutes that address federal review of state court decisions, the
    plain language of Section 2254(d) does not specify that the
    “adjudication on the merits” be from any particular state court.
    Compare 28 U.S.C. § 2254(d) with 28 U.S.C. § 1257(a) (“Final
    judgments or decrees rendered by the highest court of a State in
    which a decision could be had, may be reviewed by the Supreme
    Court by writ of certiorari . . . .” (emphasis added)). But to
    qualify as an “adjudication on the merits,” the state court
    decision must finally resolve the claim. This means that the
    state court’s resolution of the claim must have preclusive effect.
    See 
    Rompilla, 355 F.3d at 247
    (quoting 
    Sellan, 261 F.3d at 311
    ).
    Applying this rule to the state court decisions here, we
    see no “adjudication on the merits.” Here, the Pennsylvania
    Supreme Court decided Thomas’ claims on purely procedural,
    not substantive, grounds. This decision stripped the PCRA
    court’s substantive determination of Thomas’ claims of
    preclusive effect. See Restatement (Second) of Judgments § 27
    cmt. o (1982) (“If the judgment of the court of first instance was
    based on a determination of two issues, either of which standing
    independently would be sufficient to support the result . . . [and]
    [i]f the appellate court upholds one of these determinations as
    sufficient and refuses to consider whether or not the other is
    sufficient and accordingly affirms the judgment, the judgment
    is conclusive as to the first determination.”); 18A Charles Alan
    Wright, Arthur R. Miller & Edward H. Cooper, Federal
    13
    Practice and Procedure § 4432 (2d ed. 2002) (“If the appellate
    court terminates the case by final rulings as to some matters
    only, preclusion is limited to the matters actually resolved by the
    appellate court . . . .”); see also, e.g., Sunrise Corp. of Myrtle
    Beach v. City of Myrtle Beach, 
    420 F.3d 322
    , 327–28 (4th Cir.
    2005) (holding that, although the trial court reversed an
    administrative determination on, inter alia, Constitutional
    grounds, res judicata did not apply to the Constitutional claims
    because the appellate court affirmed the trial court’s decision
    without reaching the Constitutional issues). The Pennsylvania
    Supreme Court’s procedure-based decision remains as the only
    resolution of Thomas’ claims with preclusive effect.
    Accordingly, there has been no “adjudication on the merits,” and
    AEDPA deference is not due. See also Liegakos v. Cooke, 
    106 F.3d 1381
    , 1385 (7th Cir. 1997) (noting that Section 2254(d) did
    not apply to claims decided on the merits in state trial court, but
    disposed of on procedural grounds in the state court of appeals
    because “the disposition of the last state court to issue an
    opinion determines whether the state has invoked a ground of
    forfeiture” (citing Ylst v. Nunnemaker, 
    501 U.S. 797
    (1991))).
    The Commonwealth argues that the result we reach today
    is contrary to our decision in Nara v. Frank, 
    488 F.3d 187
    (3d
    Cir. 2007). It is not. In Nara, the lower state court decided the
    merits of the petitioner’s incompetency claim and the appellate
    court subsequently reversed this decision on procedural grounds.
    
    Id. at 191–92.
    Nonetheless, we remarked that the lower state
    court “plainly did reach the merits of Nara’s incompetency claim
    14
    . . . .” 
    Id. at 201.
    This statement, however, was not directed at
    any Section 2254(d) analysis; it was made in the context of
    determining whether the District Court correctly accorded a
    presumption of correctness pursuant to 28 U.S.C. § 2254(e)(1)
    to the factual determinations of the lower state court. 
    Id. at 200.
    As we pointed out, “the § 2254(e)(1) presumption of correctness
    applies regardless of whether there has been an ‘adjudication on
    the merits’ for purposes of § 2254(d).” 
    Id. at 200–01.
    As a
    result, the Nara panel made no ruling on whether the lower
    court’s decision on the merits was an “adjudication on the
    merits” for the purposes of Section 2254(d). Indeed, we
    described the lower court as having “reach[ed],” rather than
    adjudicated, the merits of Nara’s claim.
    Fahy v. Horn is also consistent with our decision in this
    case. In Fahy, we applied AEDPA deference to a lower court’s
    decision on the merits even though a state appellate court
    dismissed the petitioner’s subsequent appeal as 
    waived. 516 F.3d at 197
    , 199, 202–03. The unique facts of that case,
    however, warranted such a disposition. In Fahy, while his
    appeal of the lower court’s decision on the merits was pending,
    the petitioner filed a motion to “withdraw his appeal and to
    waive all collateral proceedings so that his death sentence could
    be carried out.” 
    Id. at 177.
    The appellate court remanded the
    appeal to the lower court “for a colloquy to determine whether
    petitioner fully understands the consequences of his request to
    withdraw his appeal and to waive all collateral proceedings.”
    
    Id. After conducting
    the colloquy, the lower court determined
    15
    that the petitioner’s withdrawal and waiver decisions were made
    knowingly and voluntarily, and the petitioner appealed. 
    Id. at 178;
    see also Commonwealth v. Fahy, 
    700 A.2d 1256
    , 1258–59
    (Pa. 1997). The appellate court affirmed the validity of the
    petitioner’s withdrawal and waiver, and dismissed the 
    appeal. 516 F.3d at 178
    ; 700 A.2d at 1259–60.
    On federal habeas review, we acknowledged that “the
    state supreme court never reached the merits of [petitioner’s]
    petition because of his waiver, [but] we believe that deference
    still applies to the [lower state] court’s 
    decision.” 516 F.3d at 203
    n.36. We arrived at that conclusion because after the
    appellate court affirmed the validity of the petitioner’s
    withdrawal and waiver, the lower court’s decision on the merits
    was the decision that finally resolved the claims. See Angel v.
    Bullington, 
    330 U.S. 183
    , 189 (1947) (“If a litigant chooses not
    to continue to assert his rights after an intermediate tribunal has
    decided against him, he has concluded his litigation as
    effectively as though he had proceeded through the highest
    tribunal available to him.”). Therefore, the lower court’s
    decision was an “adjudication on the merits” that warranted
    AEDPA deference.
    In sum, for the purposes of Section 2254(d), a claim has
    been “adjudicated on the merits in State court proceedings”
    when a state court has made a decision that finally resolves the
    claim based on its substance, not on a procedural, or other,
    ground. Here, neither the Pennsylvania Supreme Court nor the
    16
    PCRA court “adjudicated on the merits” the three claims before
    us on Thomas’ appeal. Accordingly, we will review purely legal
    questions and mixed questions of law and fact de novo, but
    presume the correctness of any factual conclusions made by the
    state courts. See 
    Appel, 250 F.3d at 210
    .
    B.
    Having decided the appropriate standard of review, we
    will move to the merits of the claims at issue in Thomas’
    appeal.4
    4
    Notwithstanding the Pennsylvania Supreme Court’s
    decision to dismiss them on procedural grounds, Thomas has
    exhausted all three claims before us on his appeal. See Holland
    v. Horn, 
    519 F.3d 107
    , 112 (3d Cir. 2008) (“[A] petitioner will
    have exhausted his state remedies even if the state court does
    not address his federal claims on the merits but, instead, rejects
    the claims on an independent and adequate state ground.”).
    Additionally, there is no procedural bar on federal habeas
    review. Since Thomas filed his PCRA petition before the
    Pennsylvania Supreme Court abandoned its “relaxed waiver”
    doctrine for capital cases in Commonwealth v. Albrecht, 
    720 A.2d 693
    (Pa. 1998), the Pennsylvania Supreme Court’s
    dismissal of Thomas’ claims as waived “is not adequate to
    support the judgment for the purpose of finding a procedural
    default under federal habeas law.” Jacobs v. Horn, 
    395 F.3d 92
    , 117–18 (3d Cir. 2005). The Commonwealth does not
    contest this point, but does preserve it for potential en banc or
    17
    1.
    Thomas’ first claim is that the trial court’s instruction on
    the definition of reasonable doubt violated due process because
    it suggested a higher degree of doubt than is required for
    acquittal under the reasonable doubt standard. Here, the trial
    court instructed the jury that a reasonable doubt is “such a doubt
    as would cause a reasonable person to restrain from acting in a
    matter of great importance in his or her own life.” Thomas
    argues that the words “restrain from acting” set the
    Commonwealth’s burden of proof too low.
    “The requirement that guilt of a criminal charge be
    established by proof beyond a reasonable doubt dates at least
    from our early years as a Nation.” In re Winship, 
    397 U.S. 358
    ,
    361 (1970). Trial courts are free to provide juries with a
    definition for reasonable doubt. Victor v. Nebraska, 
    511 U.S. 1
    ,
    5 (1994). Further, “so long as the court instructs the jury on the
    necessity that the defendant’s guilt be proved beyond a
    Supreme Court review.
    Finally, we reject the Commonwealth’s suggestion to
    frame all of Thomas’ claims as challenges to counsel’s
    effectiveness, including those that assert trial errors. Our
    practice is to entertain the merits of the claims advanced. See,
    e.g., 
    Fahy, 516 F.3d at 189
    (“Because there are no procedural
    barriers to our exercise of jurisdiction, we proceed to the merits
    of Fahy’s habeas petition.”).
    18
    reasonable doubt, the Constitution does not require that any
    particular form of words be used in advising the jury of the
    government’s burden of proof.” 
    Id. (internal citations
    omitted).
    Our task on review is to determine “whether there is a
    reasonable likelihood that the jury understood the instructions to
    allow conviction based on proof insufficient to meet” the
    reasonable doubt standard. See 
    id. at 6
    (citing Estelle v.
    McGuire, 
    502 U.S. 62
    , 72 & n.4 (1991)).
    The Pennsylvania Supreme Court has a long history of
    approving and recommending the “restrain from acting”
    formulation that the trial court used here to define reasonable
    doubt. In 1954, the Court included this formulation in its
    “standard and approved form of charge”: a reasonable doubt
    “must be an honest doubt arising out of the evidence itself, the
    kind of a doubt that would restrain a reasonable man (or woman)
    from acting in a matter of importance to himself (or herself).”
    Commonwealth v. Donough, 
    103 A.2d 694
    , 697 (Pa. 1954).
    Since then, the Court has affirmed the use of the “restrain from
    acting” formulation on many occasions.                See, e.g.,
    Commonwealth v. Marshall, 
    810 A.2d 1211
    , 1225 (Pa. 2002)
    (“[W]e have explicitly approved of [reasonable doubt]
    instructions containing the word ‘restrain’ for nearly five
    decades.” (citations omitted)); Commonwealth v. Young, 
    317 A.2d 258
    , 261–62 (Pa. 1974) (“[W]e have repeatedly placed our
    imprimatur on the charge expressed in Commonwealth v.
    Donough . . . .”); Commonwealth v. Burns, 
    187 A.2d 552
    ,
    560–61 (Pa. 1963) (defining reasonable doubt as expressed in
    19
    Donough).
    The United States Supreme Court has not addressed
    whether the “restrain from acting” formulation is acceptable.
    Instead, it has repeatedly approved of defining reasonable doubt
    as “a doubt that would cause a reasonable person to hesitate to
    act.” 
    Victor, 511 U.S. at 20
    (emphasis added).
    Comparing the “hesitate to act” instruction with the
    “restrain from acting” formulation, we are inclined to agree with
    Thomas that the latter places a lower burden of proof on the
    prosecution. “Hesitate” implies a temporary interruption before
    acting. See Webster’s Third New Int’l Dictionary 1061 (1966)
    (“hesitate . . . 1 a : to hold back in doubt or indecision : avoid
    facing a decision, encounter, or problem . . . b : to hold back
    from as if from scruple . . . 2 : to delay [usually] momentarily :
    Pause . . . 3 : Stammer . . . .”). “Restrain” suggests a more
    prolonged, if not permanent, period of inaction. See 
    id. at 1936
    (“restrain . . . 1 a : to hold (as a person) back from some action,
    procedure, or course : prevent from doing something (as by
    physical or moral force or social pressure) . . . b : to limit or
    restrict to or in respect to a particular action or course : keep
    within bounds or under control . . . 2 a : to moderate or limit the
    force, effect, development, or full exercise of : prevent or rule
    out excesses or extremes of . . . b : to keep from being
    manifested or performed . . . 4 a : to deprive of liberty : place
    under arrest or restraint b : to deprive (as of liberty) by restraint
    : abridge the freedom of . . . .” (obsolete definitions omitted)).
    20
    Accordingly, defining reasonable doubt as such a doubt that
    would “restrain” one’s actions decreases, to some extent, the
    burden of proof that the prosecution would have to meet were
    the “hesitate to act” formulation employed instead.
    Nonetheless, even though we believe that the “restrain
    from acting” formulation lessens the prosecution’s burden of
    proof, we cannot say that its use is unconstitutional. The
    Supreme Court has never indicated that a reasonable doubt
    instruction must demand as much from the prosecution as the
    “hesitate to act” formulation does. Instead, the Court has merely
    described the “hesitate to act” formulation as a “common sense
    benchmark for just how substantial such a doubt must be.”
    
    Victor, 511 U.S. at 20
    –21. It does not follow that any definition
    requiring more doubt than this benchmark is unconstitutional.
    The Court has provided us with a standard for assessing
    the constitutionality of a reasonable doubt instruction: “‘[T]aken
    as a whole, the instructions [must] correctly conve[y] the
    concept of reasonable doubt to the jury.’” 
    Id. at 6
    (quoting
    Holland v. United States, 
    348 U.S. 121
    , 140 (1954)). Applying
    this standard, the Court has approved of reasonable doubt
    instructions that defined the term as “the kind of doubt . . .
    which you folks in the more serious and important affairs of
    your own lives might be willing to act upon,” Holland, 
    348 U.S. 21
    at 140,5 “not a mere possible doubt . . . [but] that state of the
    case which, after the entire comparison and consideration of all
    the evidence, leaves the minds of the jurors in that condition that
    they cannot say they feel an abiding conviction, to a moral
    certainty, of the truth of the charge,” 
    Victor, 511 U.S. at 7
    (emphasis omitted), and “an actual and substantial doubt
    reasonably arising from the evidence, from the facts or
    circumstances shown by the evidence, or from the lack of
    evidence on the part of the State, as distinguished from a doubt
    arising from mere possibility, from bare imagination, or from
    fanciful conjecture,” 
    id. at 18
    (emphasis omitted).
    5
    The charge reviewed in Holland thus spoke in terms of
    a doubt sufficient to provide a basis for affirmative action in an
    important personal matter, as contrasted with the charge before
    us which spoke in terms of a doubt sufficient to provide a basis
    for choosing not to act in such a matter. Both, however, spoke
    of a doubt sufficient to control one’s behavior, as contrasted
    with a doubt sufficient to cause one to “hesitate to act.” In
    Holland, the Court expressed a preference for a “hesitate to act”
    charge but held that the charge given there was “not of the type
    that could mislead the jury into finding no reasonable doubt
    when in fact there was 
    some.” 348 U.S. at 140
    . While we have
    concluded that the charge given here could be understood to
    lower the government’s burden to some degree from that
    imposed by a “hesitate to act” charge, that degree is no greater
    than the degree of lowering in Holland, and we are confident
    that here, too, the charge was not of the type that could mislead
    the jury.
    22
    In contrast, the Court has held only one reasonable doubt
    instruction to be constitutionally deficient:
    It must be such doubt as would give rise to a
    grave uncertainty, raised in your mind by reasons
    of the unsatisfactory character of the evidence or
    lack thereof. A reasonable doubt is not a mere
    possible doubt. It is an actual substantial doubt.
    It is a doubt that a reasonable man can seriously
    entertain. What is required is not an absolute or
    mathematical certainty, but a moral certainty.
    Cage v. Louisiana, 
    498 U.S. 39
    , 40 (1990). In Cage, the Court
    reasoned that “the words ‘substantial’ and ‘grave,’ as they are
    commonly understood, suggest a higher degree of doubt than is
    required for acquittal under the reasonable doubt standard.” 
    Id. at 41.
    The Court continued: “[w]hen those statements are then
    considered with reference to ‘moral certainty,’ rather than
    evidentiary certainty, it becomes clear that a reasonable juror
    could have interpreted the instruction to allow a finding of guilt
    based on a degree of proof below that required by the Due
    Process Clause.” 
    Id. Viewed against
    this jurisprudential background, we
    conclude that the reasonable doubt instruction used here was
    constitutional. Although “restrain from acting” requires more
    doubt to acquit than “hesitate to act,” it does not, by itself, so
    raise the threshold as to “suggest a higher degree of doubt than
    23
    is required for acquittal under the reasonable doubt standard.”
    See 
    id. at 41.
    As a result, the trial court’s mere use of the word
    “restrain,” though perhaps not ideal, is not enough to render its
    entire instruction unconstitutional.6
    2.
    Thomas’ second claim is that the Commonwealth’s
    closing argument at sentencing violated his due process and
    Eighth Amendment rights by inviting the jury to consider an
    improper sentencing factor—future dangerousness.         He
    6
    The Pennsylvania Supreme Court has also rejected
    arguments that the word “hesitate” must replace “restrain” in a
    proper reasonable doubt instruction. See, e.g., Commonwealth
    v. Brown, 
    368 A.2d 626
    , 634 (Pa. 1976) (dismissing an
    “object[ion] to the use of the word ‘restrain’, and [the]
    suggest[ion that] ‘hesitate’ is a more appropriate standard”); see
    also, e.g., Commonwealth v. Porter, 
    728 A.2d 890
    , 899 (Pa.
    1999) (“[T]he distinction between ‘hesitate before acting’ and
    ‘restrain before acting’ is de minimis and clearly such a subtle
    variation in phrasing would not be an abuse of the trial court’s
    discretion.”). It has done so even though Section 7.01(3) of the
    Pennsylvania Suggested Standard Criminal Jury Instructions
    recommends providing juries with a definition of reasonable
    doubt that includes the word “hesitate.” See Commonwealth v.
    Collins, 
    957 A.2d 237
    , 264 (Pa. 2008); Commonwealth v. Rios,
    
    920 A.2d 790
    , 805–06 (Pa. 2007); Commonwealth v. Carson,
    
    913 A.2d 220
    , 254 (Pa. 2006); 
    Porter, 728 A.2d at 899
    –900.
    24
    contends that the Com m onw ealth’s conduct w as
    unconstitutional for two reasons: 1) it urged the jury to consider
    future dangerousness when contemplating the death penalty,
    which a jury cannot do under Pennsylvania law; and 2) it created
    an unacceptable risk that the jury believed, in error, that Thomas
    could be released on parole if he were not sentenced to death.
    Thomas also claims that trial counsel was ineffective for failing
    to object to the Commonwealth’s argument or to seek curative
    instructions.
    In reviewing the constitutionality of the Commonwealth’s
    conduct at sentencing, “[t]he relevant question is whether the
    prosecutors’ comments ‘so infected the trial with unfairness as
    to make the resulting conviction a denial of due process.’”
    Darden v. Wainwright, 
    477 U.S. 168
    , 181 (1986) (quoting
    Donnelly v. DeChristoforo, 
    416 U.S. 637
    , 643 (1974)). Here, at
    sentencing, the Commonwealth stated the following as part of
    its closing argument to the jury:
    There sits Brian Thomas, there sits
    convicted Brian Thomas. You have found what
    he did to Linda Johnson. You heard what
    happened to [the] three year old [whom he
    assaulted]. . . . You heard what happened to [the
    neighbor whose bedroom he trespassed into].
    It is not for me to say, it is not for the
    Judge to say. Only you can say enough. Only you
    can say stop.
    25
    I submit to you, ladies and gentlemen, that
    Brian Thomas has used up his chances. I would
    submit to you that it’s time for somebody to say
    Brian Thomas, you have forfeited your right to
    live among civilized people by your conduct, by
    your behavior, what you did, why you did it and
    how you did it. You should not be allowed to
    continue.
    There is not a cry here, ladies and
    gentlemen, for vengeance. There is not a cry here
    to bring back a person who is dead. [B]ut there is
    a cry here, ladies and gentlemen, for the type [of]
    person who would brutally beat, rape and
    sexual[ly] mutilate another human being. . . .
    [I]t’s time for somebody to say in some way Brian
    Thomas, enough is enough. The citizens of
    Philadelphia can’t tolerate you in their midst, take
    you out somewhere where your type [of] conduct
    will not ever be a threat to the citizens of
    Philadelphia again.
    [* * *]
    . . . I submit to you that based on your
    findings and based on the facts of this case, you
    must say there is no mitigation, the buck stops
    here, and for what you did, Brian Thomas, you
    should die. [Y]ou should die.
    The Commonwealth’s closing does not urge the jury to
    26
    consider Thomas’ future dangerousness as a sentencing factor.
    Taken in isolation, certain statements may seem to border on
    such an appeal.          But when viewed in context, the
    Commonwealth’s message is clear: Thomas’ crimes, both past
    and present, are so repulsive that they warrant the death penalty.
    The Commonwealth’s references to Johnson’s murder, Thomas’
    assault of the three-year-old, and his trespass into a neighbor’s
    bedroom demonstrate that the Commonwealth was framing its
    argument with the aggravating circumstance that it sought to
    show at sentencing: Thomas’ history of violent felonies. With
    that in mind, the Commonwealth’s calls for the jury to “say
    enough,” “say stop,” and to tell Thomas that “[y]ou should not
    be allowed to continue,” are plain allusions to its claim that
    “Brian Thomas has used up his chances,” and that “the buck
    stops here, and for what you did, Brian Thomas, you should
    die.” Indeed, the Commonwealth’s use of the word “tolerate”
    and the phrase “your type [of] conduct” indicates that it wanted
    the jury to impose the death penalty because the “citizens of
    Philadelphia” had had enough of Thomas’ past criminal
    conduct, not because Thomas could be a threat to society in the
    future. Cf. Simmons v. South Carolina, 
    512 U.S. 154
    , 157
    (1994) (characterizing an argument that death “would be ‘a
    response of society to someone who is a threat. Your verdict
    will be an act of self-defense’” as an argument to consider future
    dangerousness as a sentencing factor).
    Nor does the Commonwealth’s argument create an
    unacceptable risk that the jury believed that, if it did not impose
    27
    the death penalty, Thomas could be released on parole. Plainly,
    the Commonwealth never mentioned parole, and we do not read
    its argument as suggesting that Thomas could be paroled from
    a life sentence. As a result, the Commonwealth’s conduct at
    sentencing was constitutional.7
    3.
    Thomas’ third claim is that his trial counsel was
    ineffective for failing to life-qualify the jury—to determine that
    each juror could vote for a life sentence. Strickland sets the
    relevant test: Thomas must show that 1) his counsel’s
    performance was deficient, and 2) his counsel’s deficient
    performance caused him 
    prejudice. 466 U.S. at 687
    . To be
    deficient, counsel’s performance must fall below an objective
    standard of reasonableness. 
    Id. at 6
    87–88. To demonstrate
    prejudice, Thomas “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 6
    94.
    In Morgan v. Illinois, 
    504 U.S. 719
    (1992), the Supreme
    7
    Because we see no merit to Thomas’ underlying claim
    of error, we also hold that counsel was not ineffective for
    failing to object. See Moore v. Deputy Comm’rs of SCI-
    Huntingdon, 
    946 F.2d 236
    , 245 (3d Cir. 1991) (concluding that
    counsel was not ineffective for failing to object where “there
    would have been no basis for the objection”).
    28
    Court held that defendants had a right to life-qualify potential
    jurors at voir dire. At issue here is not whether Thomas’ trial
    counsel should have known he had a right to ask life-qualifying
    questions at the time the jury was empaneled—six years before
    Morgan was decided. It is clear that he knew that he could: he
    asked one juror life-qualifying questions, and she responded that
    she could vote for a life sentence under certain circumstances.
    The only question in this case is whether counsel’s failure to ask
    the rest of the jurors life-qualifying questions constituted
    ineffectiveness. We believe that it does not.
    First, we note that the Supreme Court has never imposed
    an obligation on trial counsel to life-qualify a jury. See 
    Morgan, 504 U.S. at 726
    (framing the issue as “whether on voir dire the
    court must, on defendant’s request, inquire into the prospective
    jurors’ views on capital punishment” (emphasis added)).
    Second, Thomas has not identified any relevant
    “[p]revailing norms of practice as reflected in American Bar
    Association standards and the like,” 
    Strickland, 466 U.S. at 688
    ,
    that suggest that Thomas’ counsel had an obligation to life-
    qualify the jury.
    Third, the record does not indicate that Thomas’ counsel
    had any reason to life-qualify any additional jurors. Thomas
    suggests that two jurors showed so much enthusiasm for the
    death penalty in their responses to the court’s death-qualification
    question that they should have been life-qualified: 1) one juror
    29
    responded with “I believe in the death penalty” when asked
    whether he had “any moral, religious or ethical beliefs which
    could prevent [him] from voting for the death penalty in a
    proper case”; and 2) another juror answered “[n]o” before the
    court finished asking the question. To us, however, neither
    response is so indicative of a bias in favor of the death penalty
    that effective counsel would have asked to life-qualify these two
    jurors. There are a myriad of reasons why the first juror chose
    to use the words that he did, and the second juror chose to
    answer as quickly as he did. Without more, we will not
    speculate that they did so because of any enthusiasm for the
    death penalty.
    Fourth, even if Thomas’ counsel were deficient for
    failing to life-qualify every juror, Thomas has not shown
    prejudice. Since Pennsylvania’s death sentence can only be
    imposed by a unanimous jury, see 42 Pa. Cons. Stat. §
    9711(c)(iv), Thomas has demonstrated prejudice if “‘there is a
    reasonable probability that, but for counsel’s unprofessional
    errors . . .’ one juror [would have] voted to impose a sentence of
    life imprisonment rather than the death penalty.” Bond v. Beard,
    
    539 F.3d 256
    , 285 (3d Cir. 2008) (quoting 
    Strickland, 466 U.S. at 694
    ). Thomas has provided not a shred of evidence
    suggesting any probability that, had his trial counsel life-
    qualified every juror, at least one juror would have voted to
    sentence Thomas to life imprisonment. He simply invites our
    speculation. Accordingly, Thomas’ claim for habeas relief on
    this ground was properly denied.
    30
    IV.
    We turn next to the issues that the Commonwealth raises
    on cross-appeal. The District Court granted Thomas sentencing
    relief because it determined that two of his claims had merit: 1)
    Thomas’ trial counsel was ineffective for failing to investigate
    and present mitigating evidence, and 2) Thomas’ waiver of his
    right to present mitigating evidence was not made knowingly
    and intelligently. Thomas 
    III, 388 F. Supp. 2d at 505
    –11,
    513–16. On cross-appeal, the Commonwealth argues that the
    District Court erred in vacating Thomas’ sentence because 1) the
    District Court applied the wrong standard of review, 2) there is
    insufficient evidence that Thomas’ counsel failed to investigate
    mitigating evidence, and 3) any deficiency by counsel did not
    prejudice Thomas.
    A.
    The Commonwealth claims that the District Court erred
    in reviewing Thomas’ ineffective assistance and waiver claims
    de novo because they were “adjudicated on the merits” by the
    Pennsylvania Supreme Court, and AEDPA deference pursuant
    to Section 2254(d) is warranted. We disagree.
    It is clear that Thomas raised both the ineffective
    assistance and waiver claims in state court. On direct appeal,
    Thomas asserted that he did not waive his right to present
    mitigating evidence knowingly and intelligently. Indeed, he
    31
    submitted an affidavit that set out the factual basis for this
    claim:
    I did not then understand that I could present
    evidence concerning my character as a mitigating
    circumstance during the penalty phase. I was
    under the belief that I could only present evidence
    relating to the circumstances of the offense. This
    is the reason why I declined to present any
    testimony at the penalty hearing. . . . At no time
    did my attorney explain to me that evidence
    concerning my character could or should be
    presented for the jury’s consideration at the
    penalty hearing.
    In his PCRA petition, Thomas repeated this claim, and added an
    allegation that counsel was ineffective for failing to investigate
    and present mitigating evidence that was available at the time of
    his sentencing.
    Even though Thomas raised these claims during the
    course of the state court proceedings, no state court actually
    adjudicated them on their merits. The PCRA court and the
    reviewing Pennsylvania Supreme Court declined to reach the
    merits of each. Instead, both courts determined that the claims
    “have previously been decided by [the Pennsylvania Supreme
    Court] on direct appeal.” Thomas 
    II, 744 A.2d at 714
    & n.3. In
    reaching that conclusion, both courts were mistaken. First, the
    Pennsylvania Supreme Court could not have addressed Thomas’
    32
    ineffective assistance claim on direct appeal because he raised
    it for the first time in his PCRA petition. Second, on direct
    appeal, the Pennsylvania Supreme Court never determined
    whether Thomas knowingly and intelligently waived his right to
    present mitigating evidence. On direct appeal, the Pennsylvania
    Supreme Court addressed only one mitigating evidence issue:
    whether Thomas understood that he could present mitigating
    evidence. Thomas 
    I, 561 A.2d at 710
    (“Finally, Appellant
    complains that his trial counsel did not advise him that he could
    put on evidence of mitigating circumstances and that this
    omission was prejudicial ineffectiveness.” (emphasis added)).
    But Thomas’ waiver claim raised a completely different issue:
    he asserted that his waiver was not knowing and intelligent
    because he did not understand the nature and purpose of
    mitigating evidence. Therefore, no state court actually decided
    the claims that formed the basis of the District Court’s decision
    to grant Thomas habeas relief.
    The Commonwealth points out that the Pennsylvania
    Supreme Court, in reviewing Thomas’ PCRA petition, stated
    that “[t]he issue of the presentation of mitigating evidence, in all
    its possible manifestations, was determined by this Court’s
    previous decision.” Thomas 
    II, 744 A.2d at 714
    n.3. The
    Commonwealth urges us to accept the Pennsylvania Supreme
    Court’s statement at face value and view Thomas’ claims as
    “adjudicated on the merits.” This we cannot do. For the
    purposes of determining whether there was an “adjudication on
    the merits” in state court, what matters most is what the state
    33
    court actually did, not what it said it did. We cannot blindly
    accept a court’s ex post characterization of its prior action when
    that characterization is at odds with what we conclude the
    court’s prior action plainly was.
    “[I]f an examination of the opinions of the state courts
    shows that they misunderstood the nature of a properly
    exhausted claim and thus failed to adjudicate that claim on the
    merits, the deferential standards of review in AEDPA do not
    apply.” Chadwick v. Janecka, 
    312 F.3d 597
    , 606 (3d Cir. 2002).
    Here, the record plainly shows that while Thomas raised the
    claims at issue in state court, the state courts did not reach their
    merits. Accordingly, there was no “adjudication on the merits,”
    and the District Court was correct in reviewing the claims de
    novo. See 
    Appel, 250 F.3d at 210
    .
    B.
    The District Court addressed Thomas’ ineffective
    assistance and waiver claims together, Thomas III, 
    388 F. Supp. 2d
    at 504, but Thomas’ ineffective assistance claim was the
    focal point of its analysis. First, the District Court concluded
    that trial counsel was ineffective for failing to investigate and
    present mitigating evidence. 
    Id. at 505–11.
    Second, the District
    Court determined that Thomas’ waiver of his right to present
    mitigating evidence did not cure the prejudice caused by
    counsel’s deficiency because the waiver was not made
    knowingly and intelligently. 
    Id. at 513–16.
    Accordingly, in
    34
    reviewing the District Court’s decision and the merits of the
    Commonwealth’s cross-appeal, we will concentrate on Thomas’
    ineffective assistance of counsel claim.
    The Commonwealth directs our attention to the
    evidentiary record that Thomas is obligated to produce in
    support of his ineffective assistance claim. It points out that
    courts assessing attorney performance must apply a “strong
    presumption that counsel’s conduct falls within the wide range
    of reasonable professional assistance.” 
    Strickland, 466 U.S. at 689
    . Here, the Commonwealth sees no evidence on the record
    concerning the extent, if any, of Thomas’ counsel’s pre-
    sentencing investigation into mitigating evidence. It argues that,
    based on such a record, Thomas cannot possibly demonstrate
    that his counsel was deficient. Accordingly, the Commonwealth
    asserts that we must deny Thomas’ request for habeas relief.
    We agree with the Commonwealth that the record is
    sparse. The only documentary evidence directly pointing to a
    failure to investigate is a declaration from Thomas’ aunt, signed
    nine years after Thomas’ sentencing, that states that no attorney
    or investigator asked her about Thomas’ life and mental health
    while he was on trial. But Thomas has sought to prove that trial
    counsel did not investigate, so Thomas’ failure to discover
    evidence of an investigation is itself a sign that none occurred.
    Therefore, it is entirely appropriate for us to consider what
    Thomas has looked for, but cannot find. Here, after Thomas
    purportedly waived the presentation of mitigating evidence,
    35
    there was no proffer from counsel identifying the investigative
    measures he had undertaken, or what evidence he was prepared
    to present. Additionally, a search of the state court file, where
    Thomas’ court-appointed counsel and the court would have
    lodged certain case-related documents, yielded nothing
    suggesting an investigation—no request for a mitigation
    investigator, no request for funds for a mitigation investigation,
    no request for a defense mental health expert, and no subpoenas
    for mental health records. Had Thomas’ counsel performed any
    investigation, we would expect either some mention of it in open
    court or some “paper trail” suggesting it in the record of
    proceedings. The absence of both implies that counsel did no
    investigating.
    Nonetheless, from this record, we cannot simply jump to
    the conclusion that Thomas’ counsel was deficient. Counsel’s
    performance enjoys a presumption of effectiveness, and we must
    “judge the reasonableness of counsel’s challenged conduct on
    the facts of the particular case, viewed as of the time of
    counsel’s conduct.” 
    Id. at 6
    89–90. “A reviewing court cannot
    make such a determination on a clean slate.” 
    Marshall, 307 F.3d at 106
    . This means that based on the present record, we
    cannot affirm the District Court’s conclusion that Thomas’
    counsel was deficient at sentencing.
    We by no means go so far as to deny Thomas the
    possibility of relief. This is not the first time we have been
    asked to determine counsel’s effectiveness where “the picture is
    36
    less than complete.” 
    Id. In Marshall,
    we also had “no record
    before us as to what preparation or investigation, if any, was
    performed by counsel in anticipation of the penalty phase . . . .”
    
    Id. We therefore
    “conclude[d] that a District Court hearing is
    essential, and remand[ed] for a new ruling by the District Court
    as to Strickland based upon a complete record.” 
    Id. at 117.
    Likewise, we believe that any resolution of Thomas’ Strickland
    claims here is premature without the benefit of an evidentiary
    hearing. Accordingly, we will remand the case for a hearing
    concerning the extent, if any, of Thomas’ counsel’s pre-
    sentencing investigative efforts to obtain mitigating evidence.
    C.
    The Commonwealth urges that an evidentiary hearing
    would be inappropriate for two reasons: 1) Thomas has failed to
    develop a factual record in state court, so a hearing would be
    barred by 28 U.S.C. § 2254(e)(2); and 2) even if counsel were
    deficient, Thomas cannot prevail because he was not prejudiced.
    Neither of these arguments are persuasive.
    1.
    First, Thomas did not “fail[] to develop the factual basis
    of a claim in State court” in such a way that causes Section
    37
    2254(e)(2) to bar an evidentiary hearing.8 “Under the opening
    clause of § 2254(e)(2), a failure to develop the factual basis of
    a claim is not established unless there is lack of diligence, or
    some greater fault, attributable to the prisoner or the prisoner’s
    counsel.” Williams v. Taylor, 
    529 U.S. 420
    , 432 (2000).
    “Diligence . . . depends upon whether the prisoner made a
    reasonable attempt, in light of the information available at the
    time, to investigate and pursue claims in state court; it does not
    depend . . . upon whether those efforts could have been
    successful.” 
    Id. at 435.
    In Thomas v. Varner, 
    428 F.3d 491
    (3d
    Cir. 2005), we concluded that the petitioner’s request for an
    evidentiary hearing in the state post-conviction court, which was
    denied, showed sufficient diligence to render Section 2254(e)(2)
    inapplicable. 
    Id. at 498.
    Likewise, here, Thomas requested an
    evidentiary hearing in the PCRA court to develop the factual
    record for his claim that trial counsel failed to investigate
    mitigating evidence. Therefore, Section 2254(e)(2) does not
    apply. See also 
    Williams, 529 U.S. at 437
    (“Diligence will
    require in the usual case that the prisoner, at a minimum, seek an
    evidentiary hearing in state court in the manner prescribed by
    state law.”).
    8
    According to 28 U.S.C. § 2254(e)(2)’s opening clause,
    “[i]f the applicant has failed to develop the factual basis of a
    claim in State court proceedings, the court shall not hold an
    evidentiary hearing on the claim . . . .” Sections 2254(e)(2)(A)
    and (B) list three exceptions to the opening clause, which are
    not at issue here.
    38
    Second, without a fully developed record, we cannot
    foreclose the possibility that Thomas will be able to show
    prejudice—a reasonable probability that, but for counsel’s
    deficiency, one juror would have voted to impose a sentence of
    life imprisonment. See 
    Bond, 539 F.3d at 285
    . In Pennsylvania,
    the jury must impose a sentence of life imprisonment unless it
    unanimously finds that the aggravating circumstances outweigh
    the mitigating circumstances. 42 Pa. Cons. Stat. § 9711(c)(iv).
    “[E]xtreme mental or emotional disturbance” is specifically
    listed as a mitigating circumstance that Pennsylvania juries may
    consider when deciding whether to impose the death penalty. 42
    Pa. Cons. Stat. § 9711(e)(2). Here, the Commonwealth does not
    dispute that even the most cursory search would have yielded
    evidence of Thomas’ long history of mental illness. This history
    includes a court commitment to a psychiatric hospital when
    Thomas was sixteen, and a mental health evaluation when he
    was eighteen that described him as having “responses . . .
    similar to those in the literature describing paranoid
    schizophrenia,” and “serious mental disturbance.” Additionally,
    had counsel sought to examine Thomas’ mental health prior to
    his sentencing, the results likely would have revealed some
    mental illness: according to a court-ordered psychological
    evaluation conducted the day of Thomas’ sentencing,
    [a]t the present time, this Defendant can be best
    described as suffering from Severe Multiple
    Personality Disorders, and continues to indicate
    Sociopathic, Reactive Paranoid, and Schizoid
    39
    Traits. There is continued indication, both
    clinically as well as on psychological testing, of a
    great deal of underlying psychopathology which
    is clearly focused in the sexual area, with
    indication of sexual identity confusion, hostility
    and ambivalence toward women, and indication
    of very primitive, brittle, and inadequate controls.
    Placed in the hands of effective counsel, there is a reasonable
    probability that this evidence would have persuaded at least one
    juror to impose life imprisonment rather than the death penalty.
    2.
    The Commonwealth argues that even assuming that
    effective counsel would have discovered Thomas’ mental health
    history, no prejudice could have resulted because Thomas would
    not have let his counsel present any mitigating evidence. The
    Commonwealth asserts that Schriro v. Landrigan, 
    550 U.S. 465
    (2007), and Taylor v. Horn, 
    504 F.3d 416
    (3d Cir. 2007), are
    indistinguishable from the present case and require us to hold
    that there is no prejudice here. We disagree.
    In Landrigan, the Supreme Court confronted for the first
    time “a situation in which a client interferes with counsel’s
    efforts to present mitigating evidence to a sentencing 
    court.” 550 U.S. at 478
    . There, the petitioner’s counsel informed the
    trial court that he had advised the petitioner “very strongly” that
    40
    the petitioner should present mitigating evidence. 
    Id. at 469.
    The trial court questioned the petitioner, and the petitioner
    confirmed that he instructed his counsel not to present
    mitigating evidence and that he understood the consequences.
    
    Id. When the
    petitioner’s counsel was proffering, at the court’s
    request, the mitigating evidence he intended to present, the
    petitioner interrupted multiple times to explain away the
    mitigating characteristics of the evidence, and also to reaffirm
    that he did not want the evidence presented in court. 
    Id. at 470.
    Finally, at the end of the sentencing hearing, the petitioner stated
    that “I think if you want to give me the death penalty, just bring
    it right on. I’m ready for it.” 
    Id. Applying AEDPA’s
    deferential standard of review, the Supreme Court determined
    that the state appellate court reasonably concluded that the
    petitioner had refused to allow the presentation of mitigating
    evidence, and this refusal prevented any showing of prejudice.
    
    Id. at 475–77.
    In Taylor, the petitioner wrote a confession letter to the
    police, which stated that “I want the maximum 
    sentence.” 504 F.3d at 421
    . At the petitioner’s guilty plea hearing, the
    petitioner agreed with his counsel’s statement that he had
    instructed counsel not to contact any witnesses or to call any
    medical personnel who had spoken to him, and that he
    understood that “the likely result will be imposition of the death
    penalty.” 
    Id. At sentencing,
    the petitioner informed the court
    that he declined to present any mitigating evidence. 
    Id. at 422.
    The court then sentenced the petitioner to death. 
    Id. In the
    41
    subsequent state post-conviction relief proceedings, the state
    court conducted an evidentiary hearing, denied the petitioner’s
    request for relief, and found that the petitioner had discussed the
    possibility of presenting testimony of mitigating circumstances
    with his counsel, that the petitioner rejected the idea of doing so,
    and that the petitioner personally called potential witnesses to
    tell them not to attend his sentencing. 
    Id. at 424.
    The state
    appellate court affirmed these findings and the court’s holding.
    Id.; see also Commonwealth v. Taylor, 
    718 A.2d 743
    (Pa. 1998).
    Applying AEDPA’s deferential standard of review, we
    determined in Taylor that the state post-conviction court’s
    factual and legal conclusions were 
    reasonable. 504 F.3d at 452
    ,
    455. Comparing the petitioner to the one in Landrigan, we
    agreed with the petitioner that “he was not belligerent and
    obstructive in court like the defendant in Landrigan . . . , but the
    record shows that his determination not to present mitigating
    evidence was just as strong.” 
    Id. at 455.
    As a result, “whatever
    counsel could have uncovered, [the petitioner] would not have
    permitted any witnesses to testify, and was therefore not
    prejudiced by any inadequacy in counsel’s investigation or
    decision not to present mitigation evidence.” 
    Id. The Commonwealth
    claims that like the petitioners in
    Landrigan and Taylor, Thomas would have prevented his
    counsel from presenting any mitigating evidence, no matter
    what it was, thus obviating any possibility of prejudice. It points
    to Thomas’ conduct at his sentencing for factual support. Yet
    42
    based on our review of the record, we believe that both
    Landrigan and Taylor differ significantly from the present case.
    As an initial matter, AEDPA deference pursuant to Section
    2254(d) constrained federal review in both Landrigan and
    Taylor. It does not apply here. 
    See supra
    Part IV.A. This
    means that while the Pennsylvania courts’ determinations of
    factual issues “shall be presumed to be correct,” we review de
    novo the mixed question of law and fact of whether Thomas can
    show prejudice. See 
    Appel, 250 F.3d at 210
    .
    Moving to the merits of the Commonwealth’s argument,
    we cannot conclude that Thomas would have interfered with the
    presentation of all mitigating evidence. Thomas’ colloquy at
    sentencing focused narrowly on whether he wanted to take the
    stand himself:
    [THOMAS’ COUNSEL]: Mr. Thomas, you recall
    during the case in chief that we inquired as to
    whether or not you wanted to testify on your own
    behalf. Do you recall that?
    [THOMAS]: Yeah, I do. Why do I answer all
    these questions before? We done be over that
    already. No, I don’t want to get on the stand.
    THE COURT: Well, this is a different portion.
    [THOMAS]: I still don’t want to get on the stand.
    43
    THE COURT: Under no conditions?
    [THOMAS]: No.
    THE COURT: Is this your decision?
    [THOMAS]: Yes, it is.
    THE COURT: Did you discuss it with your
    lawyer, Mr. Watson?
    [THOMAS]: Yes.
    THE COURT: And you already told him, I would
    like to repeat, but it’s your decision not to take the
    stand at this penalty stage of the hearing or even
    to present any evidence. Is that your independent
    and voluntary decision?
    [THOMAS]: It is.
    We acknowledge what is plainly of record: the sentencing court
    did ask Thomas to confirm that “it’s your decision not to . . .
    present any evidence.” Yet we cannot ignore that this question
    was part of a compound question that also asked Thomas to
    reaffirm that “it’s your decision not to take the stand,” and the
    remainder of the questions in the colloquy only concerned
    Thomas’ desire to testify on his own behalf. Accordingly,
    Thomas’ terse answer to this inquiry does not display an intent
    to interfere with the presentation of mitigating evidence that is
    44
    strong enough to preclude a showing of prejudice. To us, the
    only thing that Thomas clearly disclaimed at his colloquy was a
    desire to testify on his own behalf.
    The followup questions asked by the Commonwealth fare
    even worse. At most, Thomas’ responses indicate that he had no
    witnesses to call at his sentencing:
    [THE COMMONWEALTH]: Mr. Thomas, do
    you have any witnesses that you would like to call
    at this time at this stage of the proceeding?
    [THOMAS]: No.
    [THE COMMONWEALTH]: Are you sure about
    that?
    [THOMAS]: No.
    [* * *]
    THE COURT: You mean no, you don’t have any
    witnesses to call.
    [THOMAS]: Right.
    [THE COMMONWEALTH]: There is no witness
    in existence you would like to call, sir, at this
    time. Yes or no?
    45
    [THOMAS]: I said no.
    This exchange provides no support for the Commonwealth’s
    argument that Thomas would have prevented the presentation of
    all mitigating evidence.
    Nor does Thomas’ refusal to stipulate to his age and
    education tip the scales in the Commonwealth’s favor. We
    agree with the Commonwealth that Thomas’ age and education
    are relatively innocuous facts, and Thomas’ decision not to
    stipulate to them is odd. We cannot agree, however, that this
    proves that Thomas was not prejudiced. While Thomas’ refusal
    to stipulate is consistent with the Commonwealth’s position, it
    is equally consistent with other scenarios that the record
    supports. Indeed, Thomas has claimed that he did not
    understand the nature and purpose of mitigating evidence.
    Thomas’ failure to stipulate could be viewed as a symptom of
    this fundamental misunderstanding, and not as an affirmative
    declaration against the presentation of all mitigating evidence.
    In sum, this case bears no resemblance to Landrigan and
    Taylor. Thomas never indicated that he would interfere with or
    otherwise prevent the presentation of all mitigating evidence,
    regardless of its nature. At sentencing, Thomas’ colloquy
    focused on two very specific questions: 1) whether he desired to
    testify on his own behalf; and 2) whether he had any other
    witnesses to call. That he answered “no” to both does not mean
    that, had effective counsel prepared mental health evidence, he
    46
    would have also declined its presentation. Therefore, we cannot
    conclude that Thomas’ conduct at sentencing eliminated all
    possibility that counsel’s performance caused him prejudice.9
    3.
    The Commonwealth also argues that Thomas was not
    prejudiced because the evidence of Thomas’ mental health
    history aggravated more than it mitigated. The Commonwealth
    points to various negative statements in Thomas’ psychological
    evaluations, including those that described him as having “little
    understanding of his social and moral responsibility,” and as a
    “sexual deviate with sadistic tendencies.” Some of these
    evaluations even recommended Thomas’ incarceration because
    “he is a serious threat in the community,” and “a dangerous
    criminal.”     The Commonwealth also notes that certain
    evaluations documenting Thomas’ mental health history
    referenced two other criminal incidents that the Commonwealth
    9
    In assessing Thomas’ ability to show prejudice under
    Strickland, the only question we answer here is whether
    Thomas would have waived his right to present mitigating
    evidence had he been represented by effective counsel. As a
    result, we offer no opinion on whether a waiver of the right to
    present mitigating evidence must be “informed and knowing.”
    See 
    Landrigan, 550 U.S. at 479
    (“We have never imposed an
    ‘informed and knowing’ requirement upon a defendant’s
    decision not to introduce evidence.”).
    47
    did not introduce at sentencing: 1) in 1975, Thomas sodomized
    five police horses with a broom handle, killing one of them; and
    2) in 1976, Thomas sexually assaulted an infant girl. As a
    result, the Commonwealth questions not only whether the
    inclusion of Thomas’ mental health history could have possibly
    changed the result of his sentencing, but also whether effective
    counsel would have even introduced any of it for the jury’s
    consideration.
    While we agree with the Commonwealth that some of
    Thomas’ mental health history paints him in a negative light, we
    are not convinced that the death penalty is a fait accompli even
    if evidence of Thomas’ mental health history were available at
    sentencing. Certainly, evidence that Thomas is a sadistic and
    dangerous sexual deviate who committed at least one prior act
    that bears resemblance to the crime in this case is not mitigating.
    Additionally, the quantity of aggravating evidence that the jury
    already did consider was significant. But Thomas’ mental
    health history acts as a common thread that ties all this evidence
    together. A single juror may well have believed that this
    unifying factor explained Thomas’ horrific actions in a way that
    lowered his culpability and thereby diminished the justification
    for imposing the death penalty. See Penry v. Lynaugh, 
    492 U.S. 302
    , 319 (1989) (“‘[E]vidence about the defendant’s
    background and character is relevant because of the belief, long
    held by this society, that defendants who commit criminal acts
    that are attributable . . . to emotional and mental problems, may
    be less culpable than defendants who have no such excuse.’”
    48
    (quoting California v. Brown, 
    479 U.S. 538
    , 545 (1987)
    (O’Connor, J., concurring))).        Therefore, there exists a
    reasonable probability that effective counsel would have chosen
    to present evidence of Thomas’ mental health history, and that
    its presentation would have convinced at least one juror to
    sentence Thomas to life imprisonment. While Thomas’ crimes
    were heinous, and while it may be that the death penalty was
    properly imposed, we cannot conclude, on this record, that he
    was not prejudiced by trial counsel’s alleged deficiencies at
    sentencing.
    V.
    We agree with the District Court that Thomas cannot
    prevail on the three claims before us on his appeal, but we
    disagree with the District Court that Thomas’ sentence should
    be vacated. Although the absence of any evidence of a pre-
    sentencing investigation in this case seems to suggest that none
    occurred, it is simply not sufficient to overcome the presumption
    of effectiveness that we are bound to apply. As a result, we will
    vacate the District Court’s sentencing decision, and remand the
    case for an evidentiary hearing concerning the extent, if any, of
    Thomas’ counsel’s pre-sentencing investigative efforts to obtain
    mitigating evidence.
    49