In 1948, the US House of Representatives received a tip from a man named Whittaker Chambers that several federal officials had been working for the communists. One of these officials was more than happy to appear before Congress to clear his name—a leading State Department and United Nations representative named Alger Hiss.
The rakish Hiss was the exemplary American statesman: Polite, pedigreed, well-spoken, and a Harvard man to boot. During the 1945 United Nations conference, the Chines...