Crime Horror Sci-Fi
A physician on death row for a mercy killing is allowed to experiment on a serum using a criminals' blood, but secretly tests it on himself. He gets a pardon, but finds out he's become a Jekyll-&-Hyde.
Directed by
Nick Grindé
Boris Karloff
Dr. John Garth
Evelyn Keyes
Martha Garth
Bruce Bennett
Dr. Paul Ames
Edward Earle
Dr. Nichols
Charles Trowbridge
Judge Braden
Ernie Adams
Sam - Hospital Prison Orderly
Edward Van Sloan
Dr. Ralph Howard
Pedro de Cordoba
Victor Sondini
Stanley Brown
Prison Gate Guard
Don Beddoe
Capt. McGraw
John Tyrrell
Sanders
Kenneth MacDonald
Anson, Prison Guard
Jack Cheatham
Patrolman Olson
George McKay
Reardon
Frederick Burton
Governor Prentiss
Frank Richards
Otto Kron - Convict
Robert Fiske
District Attorney
Richard Fiske
Mandish
Wallace MacDonald
Ben Taggart
Warden Thompson
Wright Kramer
George Wharton
Bertram Marburgh
Stephen Barclay
Bert Moorhouse
Cousel at Defense Table
Sam Harris
Courtroom Spectator
Edmund Mortimer
Courtroom Spectator
Eddie Laughton
Guard
James T. Mack
Butler
Gohr Van Vleck
Police Dispatcher

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