A British Foreign Office worker accused of being a communist spy apparently takes his own life. Government agent James Mason, however, is convinced the man was murdered, and continues his investigation in spite of his superiors' disapproval and the toll it takes on his home life. Director Sidney Lumet's intriguing Cold War suspenser, based on a John Le Carré novel, also stars Harriet Andersson, Maximilian Schell, Simone Signoret. 107 min. Widescreen; Soundtrack: English Dolby Digital mono.