爱德华·罗宾逊
Edward G. Robinson
饰：Dr. T.S. Clitterhouse
克莱尔·特雷弗
Claire Trevor
饰：Jo Keller
亨弗莱·鲍嘉
Humphrey Bogart
饰：'Rocks' Valentine
比利·怀尔德
Billy Wilder
饰：Okay
唐纳德·克里斯普
Donald Crisp
饰：Police Inspector Lewis Lane
盖尔·佩吉
Gale Page
饰：Nurse Randolph
亨利·奥尼尔
Henry O'Neill
饰：Judge
约翰·利特尔
John Litel
饰：Mr. Monroe, Prosecuting Attorney
瑟斯顿·霍尔
Thurston Hall
饰：Grant
Max 'Slapsie Maxie' Rosenbloom
饰：Butch (as Maxie Rosenbloom)
伯特·汉伦
Bert Hanlon
饰：Pat 'Pal'
科特·博伊斯
Curt Bois
饰：Rabbit
沃德·邦德
Ward Bond
饰：Tug
弗拉迪米尔·索科洛夫
Vladimir Sokoloff
饰：Popus 'Poopus'
Billy Wayne
饰：Candy
罗伯特·霍曼斯
Robert Homans
饰：Lieutenant Ethelbert Johnson
欧文·培根
Irving Bacon
饰：Foreman of Jury
Edgar Dearing
饰：Patrolman (scenes deleted)
苏珊·海沃德
Susan Hayward
饰：Patient (scenes deleted)
Frank Anthony
Frank Anthony
饰：Gambler in Room 920 (uncredited)
韦德·博特勒
Wade Boteler
饰：Captain MacLevy (uncredited)
西德尼·布雷西
Sidney Bracey
饰：Police Chemist (uncredited)
乔治娅·凯恩
Georgia Caine
饰：Mrs. Frederick R. Updyke (uncredited)
罗曼·卡伦德
Romaine Callender
饰：Roberts, Updyke's Butler (uncredited)
格伦·卡文德
Glen Cavender
饰：Alarm Company Clerk (uncredited)
Loia Cheaney
饰：Nurse Conner (uncredited)
Hal Craig
饰：Detective Getting Rocks' Fingerprints (uncredited)
Ray Dawe
饰：Policeman (uncredited)
哈尔·道森
Hal K. Dawson
饰：Pedestrian at Burglary Site (uncredited)
Earl Dwire
饰：Surgeon (uncredited)
Frank Fanning
饰：Fingerprint Expert (uncredited)
玛丽·菲尔德
Mary Field
饰：Millie, Mrs. Updyke's Maid (uncredited)
Edward Gargan
饰：Police Sergeant (uncredited)
William Haade
饰：Mrs. Updyke's Watchman (uncredited)
Winifred Vera Emily Harris
饰：Mrs. Ganswoort, Patient (uncredited)
约翰·哈伦
John Harron
饰：Alarm Company Operator (uncredited)
Thomas E. Jackson
饰：Inspector Connors (uncredited)
迈克·拉里
Mike Lally
饰：Gambler in Room 920 (uncredited)
薇拉·刘易斯
Vera Lewis
饰：Juror (uncredited)
Al Lloyd
饰：Sequin Hotel Desk Clerk (uncredited)
布鲁斯·米切尔
Bruce Mitchell
饰：Bailiff (uncredited)
埃德蒙·莫蒂默
Edmund Mortimer
饰：Updyke's Guest (uncredited)
杰克·莫厄尔
Jack Mower
饰：Second Detective (uncredited)
罗纳德·威尔逊·里根
Ronald Wilson Reagan
饰：Radio Announcer (uncredited)
Bob Reeves
饰：Policeman (uncredited)
弗兰克·瑞切尔
Frank Reicher
饰：Professor O.J. Ludwig (uncredited)
Ky Robinson
饰：Third Detective (uncredited)
Ruth Robinson
饰：Updyke's Guest (uncredited)
Eric Stanley
饰：Dr. Ames (uncredited)
拉里·斯蒂尔斯
Larry Steers
饰：Updyke's Guest (uncredited)
Libby Taylor
饰：Mrs. Jefferson, Jo's Maid (uncredited)
Monte Vandergrift
饰：First Detective, with Earphones (uncredited)
Joyce Williams
Joyce Williams
饰：Patricia (uncredited)
威廉·沃辛顿
William Worthington
饰：Updyke's Guest (uncredited)