The Invisible Ray

• Cast: Boris Karloff, Bela Lugosi, Frank Lawton, Frances Drake, Violet Kemble Cooper
• Duration: 79 minutes
• Genre: Science Fiction, Horror, Thriller
• Rating: 6.3/10
• Release Date: 1936-01-20

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.