A film adaptation of a 1974 British spy novel by John le Carré, Tinker, Tailor, Soldier, Spy stars Gary Oldman as retired espionage vet George Smiley. During the Cold War, Smiley is forced from semi-retirement to uncover a Soviet agent within MI6's echelons. Also starring Colin Firth, Tom Hardy, Mark Strong, and Ciarán Hinds.