Elenco - Submarine Alert
Richard Arlen
Lewis J. 'Lee' Deerhold
Wendy Barrie
Ann Patterson
Nils Asther
Dr. Arthur Huneker
Roger Pryor
G.B. Fleming
Abner Biberman
Commander Toyo
Marc Lawrence
Vincent Bela
John Miljan
Mr. Bambridge / Capt. Haigas
Patsy Nash
Tina Deerhold
Ralph Sanford
Agent Freddie Grayson
Jack Carr
Old Mill Gate Guard
Dwight Frye
Haldine (uncredited)