Boris Morros was a major figure in the 1930s and 1940s. The head of music at Paramount, nominated for Academy Awards, he then went on to produce his own films with Laurel and Hardy, Fred Astaire, Henry Fonda, and others. But as J. Edgar Hoover would discover, these successes were a cover for one of the most incredible espionage tales in the history of the Cold War-Boris Morros also worked for Russian intelligence. Morros's assignments took him to...