The Invisible Ray Poster

The Invisible Ray 1936

★ 6.359 votes79 min📅 1936-01-20

"Delving into new, strange fields of mystery!"

In Lambert Hillyer's atmospheric 1936 science-fiction horror *The Invisible Ray*, Boris Karloff stars as Dr. Janos Rukh, a brilliant but tormented scientist who uncovers a mysterious radium element with astonishing healing powers—only to suffer terrifying consequences.

Director: Lambert Hillyer

Cast

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

Frequently Asked Questions

What is The Invisible Ray (1936) about?

Dr. Janos Rukh discovers a radium variant with miraculous healing abilities—but as it corrupts his mind, he spirals into paranoia and seeks revenge against those he suspects betrayed him. His own body, poisoned by the element, becomes a tool of destruction in this eerie tale of science and obsession.

Who directed The Invisible Ray?

The film was directed by Lambert Hillyer, a filmmaker known for crafting atmospheric thrillers and crime dramas in Hollywood's classic era.

Who stars in The Invisible Ray?

The central cast includes Boris Karloff as Dr. Rukh, Bela Lugosi as his rival, Frank Lawton as the romantic lead, Frances Drake as Rukh's wife, and Violet Kemble Cooper with Beulah Bondi in supporting roles.

Is The Invisible Ray (1936) worth watching?

While unrated on IMDb, this 1936 sci-fi horror delivers strong atmosphere, memorable performances from horror icons Karloff and Lugosi, and a compelling twist on the Frankenstein mythos. Fans of vintage thrillers or early genre experiments will likely find it fascinating.

How long is The Invisible Ray?

The runtime for *The Invisible Ray* is 79 minutes.

🎥 Trailer

About The Invisible Ray (1936) — Karloff vs. Lugosi in a haunting sci-fi horror classic

In Lambert Hillyer's atmospheric 1936 science-fiction horror *The Invisible Ray*, Boris Karloff stars as Dr. Janos Rukh, a brilliant but tormented scientist who uncovers a mysterious radium element with astonishing healing powers—only to suffer terrifying consequences. As the element's dark influence takes hold, Rukh descends into madness, convinced his wife is unfaithful, until his own body becomes a lethal weapon wielded in vengeful fury. With Bela Lugosi as a rival scientist drawn into the deadly spiral, the film blends eerie mystery with psychological torment, creating an unforgettable atmosphere of dread and discovery.

The movie's gothic tone and early sci-fi thrills make *The Invisible Ray (1936)* a fascinating relic of Golden Age horror, where scientific ambition collides with human frailty. Karloff's intense performance and Lugosi's magnetic presence anchor a story that explores obsession, betrayal, and the perilous boundaries of human experimentation.