Focuses on a former military espionage department in London and its attempts to train an agent for a mission in East Germany.

Smiley, wrestling with retirement and disillusionment, is summoned to a secret meeting with a member of the Cabinet Office. Evidence has emerged that the Circus has been infiltrated at the highest level by a Russian agent. Find the mole, George. Clean the stables. Do whatever is necessary. Reluctantly Smiley agrees, and so embarks on a dark journey into his past - a past filled with love, duplicity and betrayal. Starring the award-winning Simon Russell...

Peter Guillam, staunch colleague and disciple of George Smiley of the British Secret Service, otherwise known as the Circus, is living out his old age on the family farmstead on the south coast of Brittany when a letter from his old Service summons him to London. The reason? His Cold War past has come back to claim him. Intelligence operations that were once the toast of secret London, and involved such characters as Alec Leamas, Jim Prideaux, George...