A wealthy society doctor decides to research the medical aspects of criminal behaviour by becoming one himself. He joins a gang of thieves and proceeds to wrest leadership of the gang away from it's extremely resentful leader.
Dr. T.S. Clitterhouse
Edward G. Robinson
Jo Keller
Claire Trevor
'Rocks' Valentine
Humphrey Bogart
Okay
Allen Jenkins
Police Inspector Lewis Lane
Donald Crisp
Nurse Randolph
Gale Page
Judge
Henry O'Neill
Mr. Monroe, Prosecuting Attorney
John Litel
Grant
Thurston Hall
Tug
Ward Bond
Radio Announcer (voice) (uncredited)
Ronald Reagan
Millie - Mrs. Updyke's Maid (uncredited)
Mary Field
Butch
Maxie Rosenbloom
Popus
Vladimir Sokoloff
Pat
Bert Hanlon
Rabbit
Curt Bois
Candy
Billy Wayne
Lt. Johnson
Robert Homans
Foreman of Jury
Irving Bacon
Guest (uncredited)
John Alban
Gambler in Room 920 (uncredited)
Frank Anthony
Captain MacLevy (uncredited)
Wade Boteler
Police Chemist (uncredited)
Sidney Bracey
Spectator at Robbery (uncredited)
John Breen
Mrs. Frederick R. Updyke (uncredited)
Georgia Caine
Roberts - Updyke's Butler (uncredited)
Romaine Callender
Alarm Company Clerk (uncredited)
Glen Cavender
Nurse Conner (uncredited)
Loia Cheaney
Courtroom Spectator (uncredited)
Bud Cokes
Detective Getting Rocks' Fingerprints (uncredited)
Hal Craig
Policeman (uncredited)
Ray Dawe
Pedestrian at Burglary Site (uncredited)
Hal K. Dawson
Surgeon (uncredited)
Earl Dwire
Fingerprint Expert (uncredited)
Frank Fanning
Gambler (uncredited)
J.C. Fowler
Police Sergeant (uncredited)
Edward Gargan
Mrs. Updyke's Watchman (uncredited)
William Haade
Mrs. Ganswoort - Patient (uncredited)
Winifred Harris
Alarm Company Operator (uncredited)
John Harron
Inspector Connors (uncredited)
Thomas E. Jackson
Gambler (uncredited)
Mike Lally
Juror (uncredited)
Vera Lewis
Sequin Hotel Desk Clerk (uncredited)
Al Lloyd
Bailiff (uncredited)
Bruce Mitchell
Guest (uncredited)
Edmund Mortimer
Second Detective (uncredited)
Jack Mower
Policeman (uncredited)
Bob Reeves
Professor O.J. Ludwig (uncredited)
Frank Reicher
Third Detective (uncredited)
Ky Robinson
Updyke's Guest (uncredited)
Ruth Robinson
Dr. Ames (uncredited)
Eric Stanley
Guest (uncredited)
Larry Steers
Patient (uncredited)
Amzie Strickland
Mrs. Jefferson - Jo's Maid (uncredited)
Libby Taylor
Forensic (uncredited)
Arthur Thalasso
First Detective - with Earphones (uncredited)
Monte Vandergrift
Patricia (uncredited)
Joyce Williams
Juror (uncredited)
Lawrence A. Williams
Guest (uncredited)
William Worthington