Overview
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 as Dr. Janos Rukh
- Bela Lugosi as Dr. Felix Benet
- Frank Lawton as Ronald Drake
- Frances Drake as Diana Rukh
- Violet Kemble Cooper as Mother Rukh
- Beulah Bondi as Lady Arabella Stevens
- Walter Kingsford as Sir Francis Stevens
- Paul Weigel as Monsieur Noyer
- Frank Reicher as Professor Meiklejohn
- Georges Renavent as Chief of the Surete