William Gargan
Role: James Montgomery 'Jim' Wilson
Irene Hervey
Role: Frankie Gilroy Wilson
Charles Lang
Role: Tex Harper
Maria Montez
Role: Sonya Dietrich Landers
Lloyd Corrigan
Role: George Lewis
Mary Gordon
Role: Abigail 'Mag' MacPherson
Truman Bradley
Role: Dr. Gregory Landers
Phillip Trent
Role: Tom Hare
Turhan Bey
Role: Captain Chundra
John Bagni
Role: Paul, the Purser
George Lynn
Role: Bland (as Peter Lynn)
Wade Boteler
Role: Christopher Ruggles
Warren Ashe
Role: R. C. Bradford
J. Pat O'Malley
Role: Chief inspector
C. Montague Shaw
Role: Captain Caldwell
Philip Ahlm
Role: Submarine Gun Crewman (uncredited)
Edgar Barrier
Role: Man on Intercom (voice) (uncredited)
Paul Dubov
Role: News photographer
Roland Got
Role: Bellhop (uncredited)
Eddie Hall
Role: Submarine Crewman firing on the Bombay Clipper (uncredited)
Riley Hill
Role: Steward (uncredited)
Keith Hitchcock
Role: Hotel clerk
Jack G. Lee
Role: News photographer
Connie Leon
Role: Chambermaid
Lal Chand Mehra
Role: Guard (uncredited)
Beatrice Roberts
Role: Miss Kane - Secretary (uncredited)
Mel Ruick
Role: Submarine commander
Tom Schamp
Role: Submarine Gun Crewman (uncredited)
Suran Singh
Role: Singapore Policeman (uncredited)
Harry Strang
Role: Submarine officer