Nazi spies use a stolen shortwave transmitter prototype to broadcast top secret shipping info to an offshore Japanese sub. To nab the spy ring, the Government has the West Coast's top radio engineers fired and shadowed to see if the Nazis recruit them to complete work on the prototype radio. Radio engineer Lew Deerhold, a resident alien without a job to pay for his adorable little ward Gina's life-saving operation, falls prey to the spy ring, and is swept up in a maelstrom of deceit and danger.
Richard Arlen
as Lewis J. 'Lee' Deerhold
Wendy Barrie
as Ann Patterson
Nils Asther
as Dr. Arthur Huneker
Roger Pryor
as G.B. Fleming
Abner Biberman
as Commander Toyo
Marc Lawrence
as Vincent Bela
John Miljan
as Mr. Bambridge / Capt. Haigas
Patsy Nash
as Tina Deerhold
Ralph Sanford
as Agent Freddie Grayson
Jack Carr
as Old Mill Gate Guard
Dwight Frye
as Haldine (uncredited)
