Katya and Igor manage to escape from the police and start their own investigation together. Meanwhile, Sonya is in an orphanage. Katya and Igor's investigation leads to the service station where Vanya works. Sokolovsky understands and this time guesses that it is Vanya who is the killer. Igor records the conversation on the phone and miraculously manages to escape again from the arriving policemen. Katya brings Igor home, he loses consciousness. By this time, Zheka, having figured out Igor's address, breaks into the apartment.