This espionage thriller tells the true life story of one of the Cold War’s most valuable assets, a Russian spy working for the CIA in the heart of the Soviet military aerospace sector. Adolf Tolkachev made the first tentative moves to reach out to the Americans in January 1977, in the heart of Moscow. At first, due to a faltering lack of human resources in the spy game for the Americans, it was seen with suspicion and Tolkachev was viewed as a KGB dupe. After he started to produce information from his workplace, the Scientific Research Institute for Radio Engineering, it was seen as a genuine defection and his material would prove absolutely vital in the arms race for the USA over a critical decade during the last years of the Cold War. Tolkachev became a billion dollar spy and his work would reach the Oval Office directly. In Moscow, the spying game is so difficult as it was seen as the hardest place on earth to work as an agent. Yet through cat and mouse cutting edge deception, the CIA were able to clandestinely successfully run their asset for a long time. It was only a crude defection from within that disrupted the operation and led to the arrest and execution of a Russian man who is a true hero for the West during this dark period. The story dovetails through risk and amazement and surprise yet is balanced out by the simple needs of a hardworking quiet family man that Tolkachev was. It is a well researched, gripping tale of a bygone era when Cold War espionage was at its critical heights.