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.

CAST: BORIS KARLOFF, EVELYN KEYES, BRUCE BENNETT, EDWARD VAN SLOAN, BEN TAGGART,PEDRO DE CORDOBA, WRIGHT KRAMER, BERTRAM MARBURGH, DON BEDDOE, ROBERT FISKE, KENNETH MACDONALD, FRANK RICHARDS, ERNIE ADAMS, STANLEY BROWN, FREDERICK BURTON, JACK CHEATHAM, EDWARD EARLE, RICHARD FISKE, SAM HARRIS, EDDIE LAUGHTON, JAMES T. MACK, GEORGE MCKAY, BERT MOORHOUSE, EDMUND MORTIMER, CHARLES TROWBRIDGE, JOHN TYRRELL, GOHR VAN VLECK
DIRECTOR: NICK GRINDE
DURATION: 62 MINS