Based on the classic novel of the same name, this international thriller is set at the height of the Cold War. George Smiley (Gary Oldman) , a disgraced British spy, is rehired in secret by his government – which fears that the British Secret Intelligence Service has been compromised by a double agent working for the Soviets. Co-starring Colin Firth and John Hurt, and directed by Tomas Alfredson (Let the Right One In) .