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Tight 79-minute runtime โ shorter than most television pilots.

"Delving into new, strange fields of mystery!"
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.
โDelving into new, strange fields of mystery!โ

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
Credits
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Cinephile deep dive
Lambert Hillyer directs. George Robinson behind the camera. Franz Waxman scores. Bernard W. Burton cuts. Runs lean at under 100 minutes. Produced in United States of America. Dialogue in English, French.
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Community reviews
Peak Classic Universal Horror A bunch of big stars with a well written story, for the time. Bela Lugosi and Boris Karloff are both great and so is Francis Drake. CW: There are racist bits, typical portrayals of Africans for the time period. So watch out for that.
Production companies

Universal Pictures
US
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Release history ยท US
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