Handcuffed hands are the only thing this serial killer leaves to the operatives. The head of the “homicide” department, Nikita Kolosov, does not have any evidence to outline the circle of suspects. Katya Petrovskaya, an employee of the police department’s press center, also has no clues, but she feels that the criminal is very close: he is making an attempt on the life of her husband, calling their friend Sergei Meshchersky. Katya is sure that she met this monster somewhere, and perhaps she still does. He seems to be teasing his pursuers, inevitably approaching them, but still remains invisible...