Mr. Wong, Detetive

Boris Karloff

James Lee Wong

Grant Withers

Police Capt. Sam Street

Maxine Jennings

Myra Ross

Evelyn Brent

Olga Petroff / Countess Dubois / Sophie Dome

George Lloyd

Devlin

Lucien Prival

Anton Mohl

John St. Polis

Carl Roemer

William Gould

Theodore Meisle

Hooper Atchley

Christian Wilk

John Hamilton

Simon Dayton