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.
Length 355 minutes
Maurice Costello | Ethel Grandin | Thomas J. McGrane | Olga Olonova | William Cavanaugh | John A. Milton | N.J. Thompson | Eugene Strong | Lorna Volare