About the book: 2015 / The first, most difficult days of the Great Patriotic War. But part of Hitler’s troops, who broke through into the territory of the Land of the Soviets, avoiding open clashes, headed towards the famous Shatsk Lakes, where the leadership of the Third Reich was going to build a secret facility for the production of heavy water. NKVD captain Kovalchuk, who remained behind enemy lines, is trying to thwart their plans... In the second part of the novel, he confronts NATO intelligence, and in the third, characters already familiar to readers from the book “Brusilov’s Treasury” join in the operation to search for a secret laboratory: the writer Sergei Bortnev and the crime boss Vladimir Klivansky.