Forensic expert Dmitry Agranovsky discovers that behind several domestic crimes there is actually a serial killer who skillfully deceives the police. The matter becomes more complicated when it turns out that this is not just a maniac, but an imitator. He does not copy someone else's style, he goes even further: he lives the life of the legendary serial killer John Christie, who hunted in England in the first half of the 20th century. To stop him, you need to understand what he needs. Taking the credit for Christie? Or frame an innocent person? And if so, what role will the kidnapped son of one of the victims, a little blind boy, be forced to play in this?