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

como Dr. John Garth

Clay Campbell

Actor

Pedro de Cordoba(1881-1950)

como Victor Sondini

Ernie Adams(1885-1947)

como Sam - Hospital Prison Orderly (uncredited)

Don Beddoe(1903-1991)

como Police Capt. McGraw

Bruce Bennett

como Dr. Paul Ames

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