Your Turn, Darling (1963)

aka's: À Toi De Faire… Mignonne/L'agente Federale Lemmy Caution

Dr. Whitaker (Guy Delorme) has disappeared after working on an invention which could give either the West or the East an edge in the Cold War. Lemmy Caution (Eddie Constantine) is assigned to return the scientist. He is advised to start the search by finding Dr. Whitaker's attractive young fiancée Geraldine (Gaia Germani). Also stars Christiane Minazzoli.