Based on a true incident that occurred in 1942 when nine Nazi saboteurs were put ashore on the coast of Long Island, New York, by submarine, with orders to blow up various defense installations.
George Sanders
as Carl Steelman / Ernst Reiter
Ward Bond
as FBI Chief Craig
Anna Sten
as Frau Reiter
Dennis Hoey
as Col. Taeger
Sig Ruman
as Dr. Herman Holger
Ludwig Stössel
as Papa Julius Steelman
Robert Barrat
as Capt. Kranz
Poldi Dur
as Helga Lorenz (as Poldy Dur)
Ralph Byrd
as Burkhardt
Elsa Janssen
as Mama Henrietta Steelman
Rex Williams
as Eichner
Charles McGraw
as Zellerbach