"In the fall of 1961, a KGB agent defected to West Germany. The slim 30-year-old man in police custody had papers in the name of an East German, Josef Lehmann, but claimed that his real name was Bogdan Stashinsky, and he was a citizen of the Soviet Union. On the orders of his KGB bosses, he had traveled on numerous occasions to Munich, where he singlehandedly tracked down and killed two enemies of the communist regime. He used a new, specially designed...