ILLEGAL CONSUMPTION OF NARCOTIC DRUGS, PSYCHOTROPIC SUBSTANCES, AND THEIR ANALOGUES IS HARMFUL TO HEALTH, AND THEIR ILLICIT TRAFFICKING IS PROHIBITED AND ENTAILS LIABILITY ESTABLISHED BY LAW. The collection brings together novels about the difficult investigations of Maria Shvetsova in those years when cases of serious crimes were under the jurisdiction of the Prosecutor's Office, and the Investigative Committee did not yet exist. But criminals are not concerned about the specifics of law enforcement agencies — murders, thefts and due crimes are committed in any historical era. Who will make the decisive "Move with the queen of spades" — the investigator or the mysterious killer who goes hunting on Saturdays? All the victims are ladies, and is this an accident or the idea of a fixed maniac? After all, ladies are different, like cards in a deck: a young girl, an elderly matron, a worried housewife. Mariishvetsova has to understand what unites all these crimes, and Neesyn has a teenager and a complicated personal life. "Heroes don't get killed," they get fired, as the opera and the investigators say. The theft of the wife of a major businessman in broad daylight, a series of attacks on currency exchange points, and the robbery of a jewelry store are new events every day, and sometimes it's unclear whether this is a struggle between criminal authorities or big politics. It is especially difficult to investigate a case if the suspect is a colleague whom you have known for many years and with whom you have eaten a pound of salt, and those who are part of the investigation team are clearly not playing on the side of the investigation. 'Sheep's skin' is a great disguise for a bloodthirsty wolf. Mariyushvetsova is asked to take up the case of the death of a high school student under very strange circumstances. Surprisingly, this case is intertwined with the murder of a small businessman, who risks remaining an eternal "grouse" unless the victim's girlfriend is an ideal witness who remembers everything and is ready for anything if only the killer is found and punished. And all this time, he stood next to Shvetsova. Will she have time to realize that she has turned out to be a nurse facing a maniac?