The Crimson Stain Mystery

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