Could the press-office employee of the Internal Affairs Directorate, Katya Perovskaya, have thought that the most ordinary sauna could become a real vision of hell? Four young men hanging above the pool. Even the seasoned head of the “homicide” department, Nikita Kolosov, had goosebumps crawl up his spine at the sight. And the man with a knife in his chest—found at a nearby cemetery? And the photograph where a group of refined ladies and gentlemen sit at a luxuriously set table, in the middle of which lies a corpse in a tuxedo? No doubt—these are links in the same chain. But where does this chain lead, into what dark labyrinth of human passions? What sinister flame is raging there and demanding ever new and new victims? Questions, questions, questions… And the answer, as always, is unexpected and… horrifying.