Cast
Boris Karloff
Dr. John Garth
Evelyn Keyes
Martha Garth
Bruce Bennett
Dr. Paul Ames
Don Beddoe
Capt. McGraw
Edward Van Sloan
Dr. Ralph Howard
Ben Taggart
Warden Thompson
Pedro de Cordoba
Victor Sondini
Wright Kramer
George Wharton
Bertram Marburgh
Stephen Barclay
Robert Fiske
District Attorney
Crew
Robert Hardy Andrews
Screenplay
Karl Brown
Story
Robert Hardy Andrews
Story
Nick Grindé
Director
Lionel Banks
Art Direction
Charles Nelson
Editor
Benjamin H. Kline
Director of Photography
Wallace MacDonald
Producer
Morris Stoloff
Music Director
Clay Campbell
Makeup Artist
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