Books on Whittaker Chambers and Alger Hiss abound, as countless scholars have labored to uncover the facts behind Chambers's shocking accusation before the House Committee on Un-American Activities in the summer of 1948--that Alger Hiss, a former rising star in the State Department, had been a Communist and engaged in espionage.

In this highly original work, Susan Jacoby turns her attention to the Hiss case, including his trial and imprisonment for perjury, as a mirror of shifting American political views and passions. Unfettered by political ax-grinding, the author examines conflicting...