Merle Oberon as Nicole Larsen

Brian Aherne as Capt. Allan Lowell

Carl Esmond as Maj. Paul Dichter

Isobel Elsom as Rose Lindstrom

Fritz Leiber as Dr. Aanrud

Erville Alderson as Soren

Erik Rolf as Ole

Reinhold Schünzel as Col. Kurt von Elser

Richard Ryen as Dr. Hoff

Lewis Wilson as Dr. Kleinich

Fern Emmett as Dress Designer (uncredited)

Byron Foulger as Norwegian Shopkeeper (uncredited)

Hans Heinrich von Twardowski as Nazi Captain (uncredited)

John Elliott as Norwegian patient

Greta Granstedt as Girl assistant

William Phillips as Edvard, Aanrud's assistant

Pietro Sosso as Janitor

Conrad Binyon as Boy

Arno Frey as Sergeant

Eric Feldary as Private

Henry Rowland as Private

Hans von Morhart as German guard

Ethel Griffies as Nurse

Walter Thiele as Orderly

John Royce as German orderly

Frederic Brunn as German guard

Lloyd Ingraham as Elderly Norwegian man

Louis Adlon as Nazi lieutenant

Niels Bagge as Thorsten

Rex Williams as Young Nazi officer

Otto Reichow as Young Nazi officer

Fern Emmett as Dress designer

Guy Kingsford as Submarine commander

Louis Jean Heydt as First Norwegian (uncredited)

Nelson Leigh as Blake