Discover the fascinating story of the spy who cracked open the Soviet military research establishment in the last years of the Cold War. Adolf Tolkachev, an engineer in a Soviet military design bureau, handed over tens of thousands of pages of top-secret technical secrets that allowed America to reshape its weapons systems and achieve near total superiority in the skies over Europe. Author David E. Hoffman creates an unprecedented and poignant portrait of Tolkachev, a man who risked it all to master the craft of spying against his own country. The Billion Dollar Spy is a brilliant feat of reporting that unfolds like an espionage thriller.