...[T]here is no greater Cold War icon than Alger Hiss, the once high-ranking State Department official who went to prison for denying that he'd passed government secrets to the Soviet Union. Nearly 60 years after he was exposed before Congress by Whittaker Chambers, a communist underground operative who later became a senior editor at Time magazine, belief in Hiss' complete innocence remains an article of faith for the political left. For anti-communists, Hiss remains the prime example of how the Kremlin infiltrated the highest ranks of the U.S. government.... Over the years, Davis remained unpersuaded by new evidence of Hiss'...