Before I Hang (1940)

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.

Boris Karloff

as Dr. John Garth

Clay Campbell

Actor

Pedro de Cordoba

as Victor Sondini

Ernie Adams

as Sam - Hospital Prison Orderly (uncredited)

Don Beddoe

as Police Capt. McGraw

Bruce Bennett

as Dr. Paul Ames

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