Mikhail Sergeevich Solomentsev - member of the Politburo of the CPSU Central Committee. Under Yu.V. Andropov, Solomentsev headed the Party Control Committee (CCP), where information came about all high-ranking figures of the CPSU, about their work, contacts, behavior in everyday life, etc. It is clear that Solomentsev was a prominent figure in the leadership of the CPSU and knew about many secrets. Together with E.K. Ligachev, Solomentsev initially supported Gorbachev's reforms, but when he saw who was making his way to power as a result, what goals were achieved by these reforms, he opposed Gorbachev. The latter reacted with lightning speed: the all-too-knowledgeable CCP chief was dismissed from his post, removed from the Politburo and retired. In his book, M.S. Solomentsev talks about the secret "personnel war" in the Politburo, led by Gorbachev. The testimony of the author of the book contains valuable, unique information about the undercover struggle in the Gorbachev leadership and methods of work of Mikhail Gorbachev himself.