Chester Morris

Character: Horatio 'Boston Blackie' Black

Maylia Fong

Character: Mei Ling

Joan Woodbury

Character: Red, the Bar-Girl

Don McGuire

Character: Les, the Bus Guide

Richard Lane

Character: Inspector William R. Farraday

Sid Tomack

Character: The Runt

Frank Sully

Character: Sergeant Matthews

Charles Arnt

Character: Pop Gerard

Luis van Rooten

Character: Bill Craddock (as Louis Van Rooten)

Philip Ahn

Character: Wong Chung Shee

Benson Fong

Character: Ah Hing

Victor Sen Yung

Character:

Peter Brocco

Character: Rolfe

Harry Strang

Character: Mac

Pat O'Malley

Character: Officer Jim

Edgar Dearing

Character: Reiber