The Crimson Stain Mystery

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.

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