After an unremarkable interview, Circus agent George Smiley determines the subject of a standard security check-a civil servant in the Foreign Office named Samuel Fennan-poses no threat, nor presents any reason for suspicion of espionage. Hours later, Samuel Fennan is found dead by suicide. Suddenly finding himself under intense scrutiny, Smiley realizes the Circus intends to blame him for Fennan's death. Rather than remain idle, Smiley begins his...

Some say George Smiley is in innocent retirement. Others say he was sacked after the Czech scandal. But all agree that nobody ever leaves the 'Circus' without some unfinished business. Brought out of retirement to trace an enemy infiltrator in the department where he was once the prize employee, the shy and retiring master of espionage moves forwards to investigate and finds himself going backwards over very old ground ...

George Smiley goes to the aid of his former colleague, Ailsa Brimley after she receives a letter from a woman predicting her own murder and naming her husband as the killer. After the woman is found dead, they uncover secret societies, sexual abuse, and a mysterious boy.

Secret agent Alec Leamas is on a dangerous mission in East Berlin, but he has doubts about the organization he serves.

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...