The first three novels
(Book)

A call from the dead: Pulled back from overseas duty during World War II, Smiley was redirected to face the threats of the Cold War. He had been asked to interview Samuel Fennan of the Foreign Office after an anonymous letter accused Fennan of Communist Party membership. Smiley's report cleared him of the allegations, so he was stunned to learn that Fennan had died the day after the interview, leaving a suicide note that claimed his career had been ruined. Investigating circumstances that make no sense to him, Smiley gradually uncovers a spy ring and in so doing is led into a lethal duel of wits with the best of his war-time pupils.

A murder of quality: George Smiley was simply doing a favor for Miss Ailsa Brimley, and old friend and editor of a small newspaper. Miss Brimley had received a letter from a worried reader: "I'm not mad. And I know my husbad is trying to kill me." But the letter had arrived too late: it's scribe, the wife of an assistant master at the distinguished Carne School, was already dead. So George Smiley went to Carne to listen, ask questions, and think. And to uncover, layer by layer, the complex network of skeletons and hatreds that comprised that little English institution.

The spy who came in from the cold: the tale of a British agent who longs to end his career but undertakes one final, bone-chilling assignment.When the last agent under his command is killed and Alec Leamas is called back to London, he hopes to come in from the cold for good. His spymaster, Control, however, has other plans. Determined to bring down the head of East German Intelligence and topple his organization, Control once more sends Leamas into the fray -- this time to play the part of the dishonored spy and lure the enemy to his ultimate defeat.