Horatio 'Boston Blackie' Black
Chester Morris
Mei Ling
Maylia Fong
Ah Hing
Benson Fong
Victor Sen Yung
Rolfe
Peter Brocco
Mac
Harry Strang
Officer Jim
Pat O'Malley
Reiber
Edgar Dearing
Red, the Bar-Girl
Joan Woodbury
Les, the Bus Guide
Don McGuire
Inspector William R. Farraday
Richard Lane
The Runt
Sid Tomack
Sergeant Matthews
Frank Sully
Pop Gerard
Charles Arnt
Bill Craddock (as Louis Van Rooten)
Luis van Rooten
Wong Chung Shee
Philip Ahn
Producer
Rudolph Flothow
Editor
Richard Fantl
Director
Seymour Friedman
Director of Photography
Vincent J. Farrar
Story
Maurice Tombragel
Screenplay