In this Cold War espionage-thriller, adapted from the novel of John Le Carre, two veteran British intelligence operatives, Leclerc (Ralph Richardson) and Haldane (Paul Rogers), recruit a young Polish defector (Christopher Jones) to check on some missiles in East Germany. Avery (Anthony Hopkins) is the British agent assigned to help him to cross the East German border. Once behind the Iron Curtain, the recruit meets a sympathetic German girl (Pia Degermark) who tries to help him to evade the East German secret police and to complete his assignment.~ Yuri German, All Movie Guide