Plot
In attempting to develop a chemical which would make a person super-intelligent, Dr. Montrose fails and the subjects of his experiments metamorphose into hideous monsters who band together and prey on humans. With the police stymied, a young detective attempts to track down the leader of the group of killers, known only to have a small crimson stain in one eye.
Trailer
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Cast
Maurice Costello
Harold Stanley
Ethel Grandin
Florence Montrose
Thomas J. McGrane
Dr. Burton Montrose
Olga Olonova
Vanya Tosca
William Cavanaugh
Doctor's Assistant
John A. Milton
Layton Parrish (as John Milton)
N.J. Thompson
Jim Tanner
Eugene Strong
Robert Clayton
Lorna Volare
Little girl
