World War 2 thriller where brilliant young English actress is a sleeper for the Secret Intelligence Service in Paris in 1940. She dances at the Folies Bergere, is framed for murder and works on the same bill as Edith Piaf. Two German cousins, a Panzer commander and a Gestapo agent are in Paris. One falls in love with the actress and the other wants her dead. The French police, Resistance and Gestapo all want to capture her. When she uncovers a double-agent...