Opinion · Supreme Court of the United States

Kyles v. Whitley

115 S. Ct. 1555

Type
Opinion
Court
Supreme Court of the United States
Jurisdiction
Federal
Date
1995-04-19
Topic
general

holding that Brady’s duty encompasses evidence “known only to police investigators and not to the prosecutor” | holding that once material Brady error is found, "there is no need for further harmless-error review” | holding that the State’s disclosure obligation under Brady turns on the cumulative effect of the withheld evidence, not an item by item analysis | holding that the state’s obligation under Brady turns on the “cumulative effect of all such evidence suppressed by the government” | holding that the Brady rule encompasses evidence “known only to police investigators but not the prosecutor” | holding that courts are to consider the cumulative impact of Brady errors when determining whether undisclosed evidence was material | concluding that evidence was material because “the effective impeachment of one eyewitness can call for a new trial even though the attack does not extend directly to others” | holding that the "touchstone of materiality is a `reasonable probability' of a different result" | holding that the “touchstone of materiality is a ‘reasonable probability’ of a different result” | holding that "prosecutor has a duty to learn of any favorable evidence known to the others acting on the government's behalf in the case " (emphasis added) | holding that a prosecutor's ignorance of exculpatory evidence not produced by a state agency does not insulate the government from responsibility for a Brady violation | holding that prosecutor has a “duty to learn” of Brady material known to members of the prosecution team, including law enforcement | holding that the rule in [ People v. ] Bagley [473 U.S. 667, 105 S.Ct. 3375 (1985)] (and hence, in Brady | recognizing that defense may properly "discredit the caliber” of the government’s case by commenting on the absence of evidence | holding that the rule in [People v.] Bagley [473 U.S. 667, 105 S.Ct. 3375 (1985) ] (and hence, in Brady | holding that State’s suppression of evidence that would have enabled impeachment of the government’s best witness violated Brady where the “heart of the State’s case was eyewitness testimony” | holding that State’s suppression of evidence that would have enabled impeachment of the government’s best witness violated Brady where the “heart of the State’s case was eyewitness testimony” | holding that the state’s obligation under Brady turns on the “cumulative effect of all such evidence suppressed by the government” | holding that contemplated impeachment of government eyewitnesses would have undermined their testimony and weakened effect of other untainted evidence essential to proof of guilt | holding that the “individual prosecutor has a duty to learn of any favorable evidence known to the others acting on the government’s behalf in the case, including the police” | holding that such a reasonable probability is shown “when the government’s evidentiary suppression undermines confidence in the outcome of the trial” (cleaned up) | holding that prosecutor is obligated under Brady to disclose evidence known not only to the prosecutor, but also to police investigators assisting the prosecutor | holding that evidence collected by civil investigators could not be imputed to the prosecution because the civil investigators played no role in the criminal case | holding that the determination of whether undisclosed evidence is “material” requires the reviewing court to determine the suppressed evidence “collectively, not item by item” | holding that “[w]e will not infer the prosecutors’ knowledge simply because some other government agents knew about the report.” | holding that the tes t for ma teriality applies irres pective o f a reque st | concluding that because petitioner could not satisfy ORC § 2953.23(A)(1), it was “no longer an available state court remedy” | holding that a petitioner need not show that he “would more likely than not have received a different verdict with the evidence” | holding that Brecht does not apply to habeas claims about

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