Vladimir Chikov's book tells about an unprecedented fact in the history of domestic intelligence services, when one person decided not only the fate of hundreds of Soviet intelligence officers and their agents, but also the fate of a huge nuclear power. This was a spy who set a kind of record both for the duration of work with American intelligence services - twenty-five years, and for the volume of classified information issued to the United States, for the processing and analysis of which a special unit was created in the CIA. And our country suffered tens of millions of dollars in damage from his espionage activities, not to mention the ruined lives and hundreds of broken destinies of Soviet and foreign citizens. During the summit, Reagan asked the General Secretary of the CPSU Central Committee M.S. Gorbachev to pardon the CIA agent. Gorbachev answered him: “Mr. President, I will have to disappoint you. The person you are asking for mercy is already dead: the sentence has been carried out...” This conversation between the leaders of the two superpowers put an end to the fate of one of the most vile and vile traitors in the history of the domestic special services. How it was possible to expose a seasoned spy is for the first time described in detail and objectively in this book.