Call for the Dead — John Le Carre

The world-famous undercover operative, George Smiley, is bitter, weary--he has seen too much and done too much--yet he cannot refuse one last desperate call for his services.

Smiley returns to solve a baffling case involving a suspect British civil servant, a brilliant, twisted former hero of the German underground; a high-ranking pompous fool of a bureaucrat -- and a once-beautiful woman with a terrifying secret.