This is book number 6 in the George Smiley series.
George Smiley is one of the most brilliantly realized characters in British fiction. Bespectacled, tubby, eternally middle-aged, and deceptively ordinary, he has a mind like a steel trap and is said to possess the cunning of Satan and the conscience of a virgin.
Smiley, now head of the Circus, must rebuild trust in the shattered organization. He is also determined to destroy his nemesis, Karla, and his spy networks. He recruits Jerry Westerby, occasional spy, occasional news reporter, full-time romantic the Honourable Schoolboy of the title and dispatches him to the Far East, where, amid the corruption and decay of former colonies, a new battle is about to begin.
Starring the award-winning Simon Russell Beale as Smiley, and with a star cast that includes Hugh Bonneville, Maggie Steed, and Anna Chancellor, this gripping dramatization perfectly captures the atmosphere of le Carre's intricate, intriguing novel.