The teenager Sasha dies in a car accident, and his mother Nina Tsareva and three younger brothers are hospitalized. Loginov and Petrovskaya interview witnesses to the incident and establish that the cause of the accident was a technical malfunction. However, the man who accidentally saved Tsareva and her sons insists on his version, according to which Nina herself wanted to commit suicide and kill her children.

The mutilated body of a certain model's Olesya Slavutich was found in the apartment miserable. The first came under suspicion of her friend - male model Alex Volkov, after a quarrel with her before the eyes of his colleagues on the podium. However, the head of the modeling agency Mironov says, the scandal was part of a planned advertising campaign. Meanwhile, the second murder is a young girl Katie. The handwriting is identical.

Loginov and Peter investigate the circumstances of a daring and sophisticated jewelry store robbery. Attackers have developed an elaborate scheme: entering the apartment one floor above, they drilled a hole in the floor and entered the shop in the store, taking the jewelry. But have not calculated the time. No time returning to the owners of the apartment living it was decided not to leave.