Chester Morris
Horatio 'Boston Blackie' Black
Maylia Fong
Mei Ling
Joan Woodbury
Red, the Bar-Girl
Don McGuire
Les, the Bus Guide
Richard Lane
Inspector William R. Farraday
Sid Tomack
The Runt
Frank Sully
Sergeant Matthews
Charles Arnt
Pop Gerard
Luis van Rooten
Bill Craddock (as Louis Van Rooten)
Philip Ahn
Wong Chung Shee
Benson Fong
Ah Hing
Victor Sen Yung
