Hugh Beaumont
— Dennis O'Brien
Ann Savage
— Ann Harmon
Edward Brophy
— Prof. Shicker
Richard Travis
— Police Inspector Lt. Bruger
Margia Dean
— Flo Klingle
Mike Mazurki
— Ape Danowski
David Bruce
— Charles Giffen
Raymond Greenleaf
— Father Donovan
Eve Miller
— Norma Harmon
Harry Hayden
— Dr. Earl J. Tomkins
Joi Lansing
— The Cocktail Waitress
Peter Mamakos
— Nick Garrison
Chris Drake
— Mike Greeley
Billy Varga
— Willie Klingle
John Indrisano
— Mushy Cavelli
Richard Monahan
— Henry - Bartender
Charles Wagenheim
— Lefty - Policy Man
Jack Chefe
— Waiter (uncredited)
Heinie Conklin
— Counter Man (uncredited)
Jack Gordon
— Wrestling Match Spectator (uncredited)
Kit Guard
— Drunk at Wrestling Match (uncredited)
Barry Norton
— Waiter (uncredited)
Cosmo Sardo
— Club patron (uncredited)
Max Wagner
— Bar Patron (uncredited)