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 … Richard Arlen, Wendy Barrie, Nils Asther, Roger Pryor, Abner Biberman, Marc Lawrence, John Miljan Added on Amazon Prime 2023-02-07.