napue illinois argued april decided june petitioner trial state convicted murder principal state witness accomplice serving sentence murder testified response question assistant state attorney received promise consideration return testimony assistant state attorney fact promised consideration nothing correct witness false testimony jury apprised however public defender promised witness held failure prosecutor correct testimony witness knew false denied petitioner due process law violation fourteenth amendment pp established principle state may knowingly use false testimony obtain tainted conviction cease apply merely false testimony goes credibility witness pp fact jury apprised grounds believing witness may interest testifying petitioner sufficient turn otherwise tainted trial fair one pp since petitioner claims denial rights federal constitution bound factual conclusion reached illinois reexamined evidentiary basis conclusion founded pp george leighton argued cause filed brief petitioner william wines assistant attorney general illinois argued cause respondent brief latham castle attorney general illinois raymond sarnow zola graves assistant attorneys general chief justice warren delivered opinion murder trial petitioner principal state witness serving sentence murder testified response question assistant state attorney received promise consideration return testimony assistant state attorney fact promised consideration nothing correct witness false testimony jury apprised however public defender promised witness question presented whether facts failure prosecutor correct testimony witness knew false denied petitioner due process law violation fourteenth amendment constitution record contains testimony following facts found murder question occurred early morning august chicago illinois cocktail lounge petitioner henry napue witness george hamer one poe one townsend entered dimly lighted lounge announced intention rob present policeman present lounge drew service revolver began firing four men melee followed townsend killed officer fatally wounded witness hamer seriously wounded napue poe carried hamer car fifth man one webb waiting due course hamer apprehended tried murder policeman convicted plea guilty sentenced years subsequently poe apprehended tried convicted sentenced death executed hamer used witness thereafter petitioner napue apprehended put trial hamer principal witness state hamer testimony extremely important passage time dim light cocktail lounge made eyewitness identification difficult uncertain pertinent witnesses left state basis evidence presented consisted largely hamer testimony jury returned guilty verdict petitioner sentenced years finally driver car webb apprehended hamer also testified convicted murder sentenced years following conviction webb lawyer former assistant state attorney prosecuted hamer poe napue cases filed petition nature writ error coram nobis behalf hamer petition alleged prosecuting attorney promised hamer testify napue recommendation reduction hamer sentence made possible effectuated attorney prayed effect consummation compact entered duly authorized representatives state illinois george hamer coram nobis proceeding came attention napue thereafter filed petition alleged hamer falsely testified promised consideration testimony assistant state attorney handling case known false hearing ultimately held former assistant state attorney testified promised help hamer hamer story reluctant participant robbery borne merely hamer testify petitioner trial testified coram nobis petition hamer behalf probably used language used zeal something hamer felt moral obligation lower denied petitioner relief basis attorney testimony appeal illinois affirmed different grounds two dissents found contrary trial attorney promised hamer consideration testify petitioner trial finding state contest found assistant state attorney knew hamer lied denying promised consideration held however petitioner entitled relief since jury already apprised someone hamer tentatively identified public defender going aid hamer trying get something granted certiorari consider question posed first paragraph opinion first established conviction obtained use false evidence known representatives state must fall fourteenth amendment mooney holohan pyle kansas curran delaware see new york ex rel whitman wilson white ragen compare jones commonwealth sawyer petition cf mesarosh result obtains state although soliciting false evidence allows go uncorrected appears alcorta texas ex rel thompson dye ex rel almeida baldi ex rel montgomery ragen supp see generally annotation principle state may knowingly use false evidence including false testimony obtain tainted conviction implicit concept ordered liberty cease apply merely false testimony goes credibility witness jury estimate truthfulness reliability given witness may well determinative guilt innocence upon subtle factors possible interest witness testifying falsely defendant life liberty may depend stated new york appeals case similar one people savvides consequence falsehood bore upon witness credibility rather directly upon defendant guilt lie lie matter subject way relevant case district attorney responsibility duty correct knows false elicit truth district attorney silence result guile desire prejudice matters little impact preventing trial real sense termed fair overlooked hamer clearly testified one offered help except unidentified lawyer public defender office hamer judge prystalski trial judge promised reduction sentence sir promised recommend reduction sentence anybody answer false known prosecutor judge criminal promised sic reduce sentence sir representative parole board see promised reduction sentence sir representative governor state illinois promised reduction sentence sir third state argues free reach factual conclusion different reached illinois bound determination false testimony reasonable likelihood affected judgment jury state relies hysler florida case held state standard specificity substantiality making allegations federal constitutional deprivations respected made independent examination allegations determine fact met florida standard duty make independent examination record federal constitutional deprivations alleged clear resting solemn responsibility maintaining constitution inviolate martin hunter lessee wheat cooper aaron principle well stated niemotko maryland cases claim denial rights federal constitution bound conclusions lower courts reexamine evidentiary basis conclusions founded reversed footnotes hamer sentenced petitioner assistant state attorney well knowing identification poe napue webb apprehended unsatisfactory character kind evidence upon jury asked inflict proper severe penalty unable determine advance whether poe napue webb make confessions participation crime represented hamer willing cooperate law enforcing officials upon trial sic trials poe napue webb apprehended recommendation reduction sentence made possible effectuated testifying behalf state napue hamer expressed petitioner reluctance cooperate unless given definite assurance recommendation reduction sentence made petitioner feeling interests justice required hamer testimony assured hamer every possible effort made conform promise previously made alleged false testimony hamer first occurred anybody give reward promise reward testifying ai nobody promised anything assistant state attorney promised recommend reduction sentence anybody following hamer testimony subject tell one napue attorneys testify case unless got consideration yes told sentenced one hundred years hope reduced well anybody help anything certainly expecting came today one told anything lawyer lawyer come talked ago said going lawyer know public defender see mean public defender office imagine know one told yes told trying get something told going something said going try told police officers testify trial napue expected consideration asked chance getting man told know promise anything spoke lawyer today said try get time cut public defender even know name see payne arkansas leyra denno avery georgia feiner new york note dissenting opinion cassell texas haley ohio malinski new york ashcraft tennessee ward texas smith texas south carolina bailey see also roth dissenting opinion stroble california sterling constantin southern pacific schuyler creswill grand lodge knights pythias justice holmes writing recognized principle years ago davis wechsler constitution laws enforced accept final decision state tribunal facts alleged give rise right bar assertion even upon local grounds