John le Carré classic novels deftly navigate readers through the intricate shadow worlds of international espionage with unsurpassed skill and knowledge, and have earned him — and his hero, British Secret Service Agent George Smiley, who is introduced in this, his first novel — unprecedented worldwide acclaim.  George Smiley had liked Samuel Fennan, and now Fennan was dead from an apparent suicide. But why? Fennan, a Foreign Office man, had been under investigation for alleged Communist Party activities, but Smiley had made it clear that the investigation — little more than a routine security check — was over and that the file on Fennan could be closed. The very next day, Fennan was found dead with a note by his body saying his career was finished and he couldn't go on. Smiley was puzzled