Dr. John Garth conducting an innovative medical experiment aimed at prolonging life and combating aging. The experiment takes an unexpected turn, placing the doctor in a confrontation with the ethics of his work and the consequences of his research.
Acting
Karloff's gentle-giant-turned-monster duality.
Production
Prison sets that look suspiciously like high school auditoriums.
Director
Nick Grindé
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
Bertram Marburgh
Stephen Barclay
Robert Fiske
District Attorney
Frank Richards
Otto Kron - Convict
Kenneth MacDonald
Anson, Prison Guard
Ernie Adams
Sam - Hospital Prison Orderly
Edward Earle
Dr. Nichols
Trivia, insights & behind the scenes
Karloff filmed this back-to-back with 'The Devil Commands' and 'The Man They Could Not Hang' for Columbia's 1940 Karloff horror cycle.
The 'mercy killing' plot was ripped from 1930s headlines about euthanasia debates, making this oddly topical mad science.
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