Jeanne Moreau, Jean-Louis Trintignant, Claude Rich, Henri Garcin, Georges Riquier, Frank Villard, Albert Rémy, Hella Petri, Nicole Desailly, Carla Marlier, Marcel Berbert, Georges Géret, Charles Denner, Henri Coutet, Max Desrau
Ordered to seduce French captain and steal from him classified papers, Mata Hari, an exotic dancer and a spy, instead falls in love with him and blows the cover.