Maryana Igorevna, the mother of the recently released Yartsev, who was serving time for the rape and murder of a girl, was found dead in her apartment. In the course of the investigation, a very strange story emerges: the murdered woman accidentally discovered videos of her son's sexual entertainment with her friend Nadezhda and decided to start an investigation into another long-standing rape case, "according to the handwriting" of her son, whom she thought was close. Yartsev's new girlfriend Zhenya claims that on the night of his mother's murder he was not with her, depriving him of his alibi ...

Several patients of the clinic die from heart failure one after another. This sudden death confuses doctors. It turns out that shortly before the death of the patients, the nurse Yana Makeeva revived her. She admits that she provoked cardiac arrest in her patients. She needed such a dangerous trick in order to subsequently save the sick and look like a heroine in the eyes of her beloved - the guard of the same clinic ...

The head of the control and auditing service of the Moscow mayor's office, Andrei Shilov, was killed along with his entire family - his wife Anna and son Dima. The investigation did not immediately sweep aside the version that Andrei killed his relatives himself, because his wife convicted him of treason and was clearly not going to let him get away with it. But soon there was information that Shilov had found serious violations in the activities of one of the private security companies that ensure the safety of schools.