"The Circus has already suffered a bad defeat, and the result was two bullets in a man's back. But a bigger threat still exists. And the legendary George Smiley is recruited to root out a high-level mole of thirty years' standing - though to find him means spying on the spies. Tinker Tailor Soldier Spy is brilliant and compelling, pitting Smiley against his Cold War rival, Karla, in one of the greatest struggles in fiction."--Cover.