During World War II, women of all backgrounds work as spies: Krystyna Skarbek, the Polish aristocrat whose daring exploits earn her the title of "Churchill's favorite spy," Andrée de Jongh, the Belgian girl whose ambitious escape network will save hundreds of Allied airmen, Josephine Baker, the glamorous singer whose fame provides the perfect cover for her anti-Nazi activities, and brothel owner Kitty Schmidt, whose Nazi-run establishment offers both secrets and pleasures.