On screen
Cast
34 credited performers
Pat O'Brien
Mike Farrough
Constance Bennett
Christine Blaine
John Halliday
John Morgan
Alan Baxter
Larry Perrin, alias Larry Ross
Erwin Kalser
Dr. Adolph Behrens
Edgar Buchanan
Charles Atterbee
Frank Sully
Tommy Malone
Marjorie Gateson
Mrs. Winslow
Francis Pierlot
Professor Mudge
Jessie Busley
Mrs. Mudge
Melville Cooper
Ship's Mate Penney
Stanley Logan
Captain James P. Hollister
Artwork unavailable
Leslie Denison
Ship's Mate Jones
Don Beddoe
Ship's Chief Engineer Anderson
Norbert Schiller
Submarine First Officer
Artwork unavailable
Frank Alten
Submarine Radio Operator
Bruce Bennett
Ship's gunnery officer
Artwork unavailable
Rex Post
First Mate
Dick Rich
Perrin's Henchman at Dock
Olaf Hytten
Agent
Artwork unavailable
Arthur Mulliner
Detective
Frank Baker
Detective
Artwork unavailable
Frank Benson
Sailor
Artwork unavailable
Bobby Hale
Sailor
Artwork unavailable
Fred Wolff
German Sailor
Douglas Gordon
Ship's Lookout
Artwork unavailable
Jean Prescott
Mrs. Hollister
Artwork unavailable
Hans von Morhart
German Sailor
Artwork unavailable
Paul Michael
German Sailor
Wyndham Standing
Man
Artwork unavailable
Arno Frey
Submarine Gunner
Artwork unavailable
David Dunbar
Sailor
Artwork unavailable
James Kilgannon
Sailor
Artwork unavailable
Hans Schumann
Submarine Commander