Marisa Mell (Mata Hari), Pernell Roberts (Capt. Henry LaFarge), Martha Schlamme (Paulette LaFarge), Mark Dempsey (Lt. Boulet), Joseph Corby (Lt. Devries), Jake Holmes (The Young Soldier), Nadine Lewis (Claudine), Paul Glaser (Mr. Dupre), Helen G Ross (Mrs. Dupre), Seymour Penzner (Philipe), Blythe Danner (Michele), Dominic Chianese (Maurice), Ryan Harrison (Pierre)