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