No doubt remains; a mole has infiltrated the highest level of the Circus, code name for British Secret Intelligence Service. Sidelined agent George Smiley is covertly tapped to root out the traitor-a task that requires an intensive dig through the labyrinths of Cold War espionage and his own past. Stellar ensemble casts bring John le Carre's thrilling tales of Cold War-era espionage to vivid life in these television classics.

Title from container. Release date: Oct. 25, 2011. Based on the book by John Le Carre; dramatized by Arthur Hopcraft.

disc 1. episodes 1-2 -- disc 2. episodes 3-4 -- disc 3. episodes 5-6.