The victim Polina gives evidence. Victoria and Artyom come to the conclusion that a serial killer is behind the attacks in the park. One of the victims remembered a white minibus. A drug that causes short-term memory loss is found in the blood of all the affected girls. The operatives decide on an investigative experiment, but the attempt to provoke the maniac proves unsuccessful. Yudin removes everyone from the case. Returning home, Victoria is attacked by an unknown man.

Antonov, who has recovered from the new attack, cannot tell the operatives anything about the robber. Meanwhile, Raf manages to protect Colonel Kolosov's good name and prove that the accident was staged. The antique dealer is furious and drives Svetlana away. Kotov and Frolov figure out the driver who brought Antonov to the house and was the last to see him. When they arrive to talk to him, he rushes off. Mukhtar rushes after him. Kolosov gets run over by a car: someone wanted to kill him.