When a neutral Danish merchant ship is forced to put into port after trying to evade British wartime contraband control, its captain becomes involved in a beautiful British Naval Intelligent agent's efforts to capture a group of German spies operating from a London cinema.
Conrad Veidt
as Capt. Andersen
Valerie Hobson
as Mrs. Sorensen
Hay Petrie
as Axel Skold
Joss Ambler
as Lt. Cmdr. Ashton
Raymond Lovell
as Van Dyne
Esmond Knight
as Mr. Pidgeon
Charles Victor
as Hendrick
Phoebe Kershaw
as Miss Lang
Harold Warrender
as Lt. Cmdr. Ellis
John Longden
as Passport officer
Eric Maturin
as Passport officer
Dennis Arundell
as Lieman
