Dr. Janos Rukh discovers a certain type of radium that has almost magical healing properties. But the element has a dangerous side, too, and it has already started affecting Rukh. Consumed by paranoia, he begins to suspect that his wife is having an affair. Wild for revenge, Rukh hatches a deadly plot...using his own poisoned body as a weapon to kill.
Cast
Boris Karloff
Dr. Janos Rukh
Bela Lugosi
Dr. Felix Benet
Frank Lawton
Ronald Drake
Frances Drake
Diana Rukh
Violet Kemble Cooper
Mother Rukh
Beulah Bondi
Lady Arabella Stevens
Walter Kingsford
Sir Francis Stevens
Paul Weigel
Monsieur Noyer
Frank Reicher
Professor Meiklejohn
Georges Renavent
Chief of the Surete
May Beatty
Mme. LeGrand (uncredited)
Paul McAllister
Papa LaCosta (uncredited)
Nydia Westman
Briggs (uncredited)
Ynez Seabury
Celeste (uncredited)
Robert Graves
Gendarme (uncredited)
Crew
Lambert Hillyer
Director
John Colton
Screenplay
Douglas Hodges
Story
Bernard W. Burton
Editor
George Robinson
Director of Photography
Fred S. Meyer
Executive Producer
Edmund Grainger
Producer
Otto Lederer
Makeup Artist
Jack Pierce
Makeup Artist
Gilbert Kurland
Sound Supervisor
Charles Carroll
Sound Recordist
Raymond Lindsay
Special Effects
John P. Fulton
Visual Effects
Franz Waxman
Original Music Composer
Howard Higgin
Original Story
Albert S. D'Agostino
Art Direction
Camille Collins
Production Secretary
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