The signal from the past

The first book from the cycle of novels about the brilliant sociophobe, together with its extraordinary team, who was engaged in the investigation of “hanging” many years of limitation and known on the network under Nonom Nick.
Smolensk. Our days. The city is shocking a series of brutal murders, the maniac leaves corpses in one of the central parks of the city. After each murder, the local entrepreneur Denis receives letters with the numbers: “1”, “2” ... What next? And how is everything that is happening with similar killings in the distant 90s, when Denis"s father became one of the victims of the maniac? Can a visiting video blogger-sociophobe find a killer before he completes his ritual?