Joseph H. Lewis
Director
Sam Katzman
Producer
Al Martin
Story
Helen Martin
Story
Helen Martin
Screenplay
Al Martin
Screenplay
Pete Mayer
Associate Producer
Heinz Roemheld
Music
Marcel Le Picard
Cinematography
Harvey Gould
Cinematography
Fred Preble
Set Designer
Charles Dunworth
Music
Robert Golden
Editor
Glen Glenn
Sound Recordist
Lew Porter
Music
Bela Lugosi
Dr. Charles Kessler
Polly Ann Young
Virginia Kessler
John McGuire
Ralph Dickson / Paul Dickson
Clarence Muse
Evans the Butler
George Pembroke
Lt. Williams
Betty Compson
Mrs. Kessler
Ernie Adams
Jules Mason, caretaker
Ottola Nesmith
Mrs. Mason
Terry Walker
Cecile Mannix, maid
Fred Kelsey
Detective Ryan
Jack Mulhall
Jim, a detective
Fred Aldrich
Guard at Ralph's Execution (uncredited)
Lloyd Ingraham
Psychiatrist (uncredited)
Robert Strange
Kirby--Coroner (uncredited)
Dorothy Vernon
Kessler's Cook (uncredited)
Robert F. Hill
Trial Judge (uncredited)
