Horatio 'Boston Blackie' Black

Chester Morris

Acting

Mei Ling

Maylia Fong

Acting

Red, the Bar-Girl

Joan Woodbury

Acting

Les, the Bus Guide

Don McGuire

Acting

Inspector William R. Farraday

Richard Lane

Acting

The Runt

Sid Tomack

Acting

Sergeant Matthews

Frank Sully

Acting

Pop Gerard

Charles Arnt

Acting

Bill Craddock (as Louis Van Rooten)

Luis van Rooten

Acting

Wong Chung Shee

Philip Ahn

Acting

Ah Hing

Benson Fong

Acting

Victor Sen Yung

Acting

Rolfe

Peter Brocco

Acting

Mac

Harry Strang

Acting

Officer Jim

Pat O'Malley

Acting

Reiber

Edgar Dearing

Acting