A socialite poses as a Nazi spy to mask her activities as a British agent.

Anna Neagle
as Sally Maitland

Richard Greene
as Lieutenant Commander Jim Garrick

Nova Pilbeam
as Betty Maitland

Albert Lieven
as Jan Orlock

Lucie Mannheim
as Madame Orlock

George Thorpe
as Colonel Charles Hargraves

Marjorie Fielding
as Lady Maitland

Franklin Dyall
as Captain Foster

Margaret Rutherford
as Mrs. Towcester

Claude Bailey
as Major Fothergill
CinemaSerf
Anna Neagle ("Sally") is quite efficient as the supposed Nazi sympathiser who abandons her family in a frequently bombed London and heads to the safety of Nova Scotia. En route, she attracts the attention of both the suave Polish officer "Jan Orlock" (Albert Lieven) and of the apparently hapless Bri...