Sidney Lumet directed this romantic melodrama involving deceit and marital secrets. The film takes place in Rome where lawyer Federico Fendi (Omar Sharif) falls in love with his colleague Renzo's (Fausto Tozzi) fiancee Carla (Anouk Aimee). Renzo warns Federico that Carla is actually a high-priced call girl, but Federico refuses to believe it. Instead, Carla and Federico marry. After the wedding however, Federico notices that Carla has been making curious disappearances from her domestic home. Recalling Renzo's warning, Federico begins the secretly follow her to find out the truth.