The criminal used one of the most cruel, savage and barbaric methods of murder, poetically called the “red tulip.” The victim's skin is cut around the waist and then removed over the head, like a T-shirt. Two corpses mutilated in this way were thrown at the monuments to Peter the Great and Catherine the Great. Under the first corpse lay a chess piece of a black knight, under the second - a queen piece. And witnesses testified that the perpetrator was wearing a rabbit mask. Investigator Valery Samsonov will have to find out who he is dealing with - a serial maniac or an intelligent and cunning criminal who conveys some encrypted message in such a savage way...