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.
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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
