Frank Hardy
Tiger Van Dorn
Ralph Marshall
Valerie Shields
Dorothy Elliott
Tom Banning
Lightning
Chiang-Houseboy
Jim Murphy
Inspector Starrett
Robert Banning
Armand Roget
John Charles
Paul Marshall
Campbell
Professor
Mrs. Maitland
Chandler Elliott
Doctor Coleman
Singapore Joe
Joe Nolan
Angus MacLeod
Hardy's Assistant
Henchman
Greenway
Jackson
Roget Clerk #1
Sailor
Undercover Detective at Dive
Detective Interrogating Pete
Peters
Henchman
Henchman
Director
Director
Stunts
Screenplay
Screenplay
Screenplay
Screenplay
Screenplay
Screenplay
Screenplay
Stunts
Editor
Stunts
Producer
Screenplay
Director of Photography
Sound
Original Music Composer
Director of Photography
Sound
