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