David Mallory
Boris Karloff
Jim Travers
Warren Hull
Sam Adams - Company Engineer (uncredited)
George Cleveland
Waitress (uncredited)
Ruth Fallows
Mr. Spinelli (uncredited)
George Humbert
Mrs. Spinelli (uncredited)
Nina Campana
Police Capt. Wallace (uncredited)
Charles C. Wilson
Policeman (uncredited)
Chuck Hamilton
Joan Mallory
Jean Rogers
John Baron aka The Kid
Alan Baxter
Petty Louie
Hobart Cavanaugh
Steven Ranger
Samuel S. Hinds
Mike Callahan
David Oliver
Fingers
Ward Bond
Carl - gang engineer
Frank Reicher
Lawyer Kruger
Edwin Maxwell
Director
Lloyd Corrigan
Music
Franz Waxman
Makeup Artist
Jack Pierce
Special Effects
John P. Fulton
Producer
Robert Presnell Sr.
Story
William A. Pierce
Director of Photography
George Robinson
Screenplay
Jack Moffitt
Tristram Tupper
Art Direction
Jack Otterson
Editor
Otis Garrett
Charles Maxwell
Sound Supervisor
Gilbert Kurland
Arthur Morton
Charles Previn
Edward Ward
Clifford Vaughan
Sound
Jess Moulin
Karl Hajos
Jesse Bastian
Visual Effects
David Raskin
Heinz Roemheld
Loren Patrick