A two-year-old girl, Katya, walking under the supervision of a young nanny Irina, disappears from the playground. The police suspect that a wanted pedophile is involved in the kidnapping of the baby. But soon Pankratov discovers the girl unconscious in the bushes near the site. Doctors show no signs of rape, but Katya will have a serious operation. Irina claims that she did not allow strangers to approach the child. However, another witness to the incident, an experienced nanny Anna Vladimirovna, reports that she saw a suspicious man with a camera not far from the site. Near the site, investigators find a box of photographic film and with its help go to the photographer, who followed another nanny and ordered by one of the parents to check her reliability. The pictures constantly confirm Irina's alibi. After the operation, the doctors diagnosed Katya with a disappointing diagnosis: bilateral brain contusion with retinal detachment caused by concussion infantile syndrome. It becomes clear that the girl was shaken a lot, but this did not happen on the set, but much earlier. Irina and the girl's mother Svetlana Polyanskaya fall under suspicion.

In the lobby of the hotel, student Maxim Cherkasov was found unconscious with a head injury. He claims that he met a girl in a bar, and when they came to the room, she attacked him. Investigators establish that Maxim works for the Escort Services agency. Bobrova and Pankratov find a victim of a similar attack, which helps them compose a composite of the suspect. Viktor Krymov is soon attacked. Having studied the circle of acquaintances of Krymov, Pankratov and Bobrova establish that Viktor constantly provided intimate services to Lyudmila Dadkovskaya, the wife of a major banker Igor Dadkovsky. However, the suspicions against Dadkovsky are not confirmed, and the investigation turns to Ryklina for help, who, accepting the next order, gives the address of the meeting place of her employee with the mysterious woman.