About the book: 2023 / On the train in which Colonel Gurov of the Ministry of Internal Affairs was returning from a business trip, passenger Oleg Dymov started a drunken brawl. Gurov had to intervene and restore order. The conductor explained that this behavior was caused by the grief that befell the passenger: the coffin with the body of his deceased wife follows in the same train. The next morning it turned out that Dymov had disappeared, and traces of struggle and blood remained in his compartment. Realizing that a crime has occurred on the train, Gurov contacts the police department of one of the stations along the route. This saves him from certain death: at the moment of conversation with the duty officer in the carriage where Gurov was traveling, an explosion is heard…