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
Bruce Bennett
Dr. Paul Ames
Don Beddoe
Capt. McGraw
Pedro de Cordoba
Victor Sondini
Evelyn Keyes
Martha Garth
Bertram Marburgh
Stephen Barclay
Ernie Adams
Sam - Hospital Prison Orderly
Edward Van Sloan
Dr. Ralph Howard
Edward Earle
Dr. Nichols
Stanley Brown
Prison Gate Guard
Frank Richards
Otto Kron - Convict
Robert Fiske
District Attorney
George McKay
Reardon
Kenneth MacDonald
Anson, Prison Guard
Frederick Burton
Governor Prentiss
Wallace MacDonald
John Tyrrell
Sanders
Charles Trowbridge
Judge Braden
Jack Cheatham
Patrolman Olson
Ben Taggart
Warden Thompson
Richard Fiske
Mandish
Wright Kramer
George Wharton
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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