Cast
Clancy Cooper
Warehouse Man (uncredited)
Herbert Evans
Wilk's Butler (uncredited)
Wheaton Chambers
Chemistry Lab Director (uncredited)
Evelyn Brent
Olga Petroff / Countess Dubois / Sophie Dome
George Lloyd
Devlin
John St. Polis
Carl Roemer
William Gould
Theodore Meisle
Wilbur Mack
Russell
Grant Withers
Police Capt. Sam Street
Maxine Jennings
Myra Ross
Lucien Prival
Anton Mohl
John Hamilton
Simon Dayton
Lee Tung Foo
Tchin
Lynton Brent
Tommy
Ed Cassidy
Ambulance Doctor (uncredited)
Lester Dorr
Coroner (uncredited)
Boris Karloff
James Lee Wong
Hooper Atchley
Christian Wilk