1940 • NR • 1h 2m
6.2/10
(33 users) 
Overview
A physician on death row for a mercy killing is allowed to experiment on a serum using a criminals' 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.
6.2/10
(33 users) Cast / Crew 
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 
Frank Richards Otto Kron - Convict 
Kenneth MacDonald Anson, Prison Guard 
Ernie Adams Sam - Hospital Prison Orderly 
Frederick Burton Governor Prentiss 
Edward Earle Dr. Nichols 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
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 Frank Richards Otto Kron - Convict Kenneth MacDonald Anson, Prison Guard Ernie Adams Sam - Hospital Prison Orderly Frederick Burton Governor Prentiss Edward Earle Dr. Nichols 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 
Keywords
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