Calificación
Reparto

Anna May Wong
Dr. Mary Ling

Akim Tamiroff
Frank Baturin

J. Carrol Naish
The Professor

Sidney Toler
Dr. Chang Ling

Philip Ahn
Robert 'Bob' Li

Anthony Quinn
Mike Gordon

Bernadene Hayes
Dolly Warren

Roscoe Karns
Rip Harrigan

Ray Mayer
Potatoes

Richard Denning
Jeff, Protective Association Henchman

Archie Twitchell
Interne

Eddie Marr
Bert, Fight Trainer

George Anderson
Detective

Charles B. Wood
1st Gangster

George Magrill
2nd Gangster

Charles Trowbridge
Dr. Jones