The Chinatown Mystery

Joe Bonomo

Joe Masters

Ruth Hiatt

Sally Warren, Chemist

Francis Ford

The Sphinx

George Chesebro

Sheldon Lewis

Ernest Shields

Jack Richardson

Grace Cunard

Rosemary Theby

Peggy O'Day

Duke Worne

Helen Gibson

Paul Malvern

Al Baffert

Crook

J.P. McGowan