Young girl Zhenya Solovyova, deputy head of the airport loading service, was found killed in her own car. Investigators Gregory and Irina find out that she was sexually harassed by her subordinates - the loaders Makarov, Antonov and Anatoly Krainov. And after the diary of the deceased fell into the hands of the investigation, it became known that the girl had long been in love with her boss, Konstantin Razumov. Razumov's reputation does not stand up to criticism: a liar, a rake and ... the leader of a group of loaders who steal valuables from passengers' luggage.

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.

Suddenly, inexplicable things begin to happen in the life of Pyotr Boluev, not a very successful middle-aged prosecutor. A series of accidents makes the prosecutor think about whether he is being pursued by ill-wishers from the criminal world? When an informant does not come to his meeting and someone gives false information about his wife, Boluev goes for help. Soon, the suspicious prosecutor's case complicates the assassination attempt ...

The daughter of a major banker Vladimir Kuznetsov and her brother's friend Ivan were found murdered in the girl's apartment. Very little time passes and it turns out that Robert - Alla's brother - is also dead. The investigation suspects Tina, Kuznetsov's new wife. But detectives are confused by the fact that peas were neatly laid out in a row at the crime scene. This is almost unmistakable evidence that the killer has serious mental disabilities.

Fitness center owner Ekaterina Turinina was found dead in her own bathroom. The investigation establishes that before her death, she had a serious quarrel with her daughter Julia, because of her fiancé Konstantin Rakov, who had a connection with a rival firm Turinina, who had long wanted to buy her business. Catherine considered him a swindler and offered him money so that he would leave her daughter alone. But Konstantin did not take the money. A quarrel with her mother served as an excellent motive for murder for Julia, and she is arrested.

The educational center for gifted children shook with horror: in an instant, the educational institution lost two employees - the director of the center, Alexander Vorobyov, and the psychologist Kira Mozheiko were killed. The detectives established that Alexander and Kira were lovers. Who could benefit from their death? Perhaps the true target of the criminals was not Vorobyov at all, but Kira, without whose recommendation not a single child could enter school.

Amina Tong, a student of the Faculty of Higher Mathematics and Cybernetics at Moscow State University, who came to study from Ulan-Ude, was found dead. All information from her computer disappeared without a trace. In the course of the investigation, it turns out that the girl, together with her classmate Yura, developed a program to predict the results of races on the races, and together with another student she played in a casino using her own system for calculating the probability of winning. The fact that, shortly before the death of Amina, Yuri sold the program to a certain Kirill, a daring gambler who attracts talented students to work on hacking and adjusting the list of results of races, comes up.

Suzy Blanchet, the wife of a wealthy businessman, Dmitry Selivanov, was killed. Suspicion falls on Dmitry's mistress Svetlana, who had been with him for a long time and even received a share in his strip club. But soon unknown people set fire to the club ... The detectives learn that Suzy was aware of her husband's adventures and was secretly preparing for a divorce. The wife was the financial guarantee of her husband: it was thanks to her capital that Dmitry managed to raise his business. Suddenly, another person involved appears in the case - the despotic mother of Selivanov, who controls the life of her son and knew about a possible divorce.

A young girl was found murdered in a hotel room. Judging by the handwriting, this is the work of a maniac - "Hotel Chekatilo" Konstantin Revenchuk. But he is in a colony, serving time for five similar murders. Georgy and Irina understand: either Revenchuk has an imitator, or someone is trying to work to justify the maniac. It becomes known that the deceased often visited a lesbian club. The next visit was just before her death, and witnesses recall that that evening the girl met some unknown lady and left with her.

For many years, Judge Chernov and his secretary Alla Kipreeva were connected by far from official relations. The talented subordinate not only brightened up the leisure of her boss, but was also the author of most of the scientific works, thanks to which Chernov received both a degree and a place in the jury. But at one point it all ended: Alla was found dead in the entrance of her lover's house.

Poluyanov's father and son were killed. In the course of the investigation, it turns out that Sasha Poluyanov, along with other boys, attended Andrei Maslov's recording studio. But Georgy and Irina are unable to talk with the rest of the guys: someone moved to their father, someone to other relatives. It seems suspicious to detectives that too many children from Poluyanov's school have abruptly changed their place of residence. And soon they find the bodies of children, according to the descriptions, similar to the missing boys. The parents are scared and refuse to cooperate with the investigation. It becomes obvious: someone is keeping them at bay.

A well-known gynecologist Alekseev was killed through the window by a rifle with a telescopic sight. His wife Mira recalls that her husband was threatened by representatives of an anti-abortion organization. At the site where the shooting was allegedly fired, investigators found the killer's rifle and hair. It was also possible to establish the identity of the owner of the site from which the threats were received. All the threads lead to the "Fourth Horseman" religious sect.

CEO of a large company Platonov is forced to retire. Events were accelerated somewhat by a memo written by one of the candidates for his post, Oleg Sergeev. During a corporate party, Platonov's assistant Nikolai did not hide his worries about the future state of his affairs - Sergeyev dislikes him, which clearly threatens to be fired. Platonov made it clear to his subordinate that he was washing his hands, and after a while Sergeev was found dead in the parking lot.

The young musician Konstantin Lvov - a patient of the successful psychiatrist Lydia Larinova - became the doctor's lover in combination. However, Lydia quickly got bored of this relationship, and she tried to break the connection. But Konstantin insisted on the continuation of the novel and once, without an invitation, showed up to her for her birthday. Larinova chased away the unfortunate admirer, and a few days later he was found dead in his own recording studio.

Valentin Milyutin, suspected of organizing the contract murder of his business partner, has been released from custody. But as soon as the businessman left the walls of the detention center, he had to return to the detectives office: his wife Polina was killed right on the threshold of their apartment. At first, the investigation suspects Milyutin's son Anatoly, but his father has long since deprived him of his inheritance and he has no motive. Suddenly, a new person appears in the case - Milyutin's comrade in prison, a certain Ledogor.

Renowned neuropathologist Anna Fomicheva, who specializes in working with patients in a state of prolonged coma, was found dead in the pool where she regularly went swimming. It becomes known that Fomicheva developed a new treatment method using dangerous drugs. The husband of one of the patients was categorically against such experiments. Having studied in detail the woman's medical history, the investigation found that the heart attack, as a result of which she fell into a coma, was not an accident. Georgy and Irina managed to establish the motive - a million dollars.

The publisher Anatoly Shiryaev and his companion arrive at the house of the Usoltsevs and insistently demands a meeting with their adopted daughter Vera. Having received a reasonable refusal, Shiryaev threatens to sue. And soon in the park they find a burnt car with a burnt corpse of a publisher. Experts establish that the death occurred as a result of several severe blows to the head.

There is a serious emergency in the optics store - the seller was shot. An advertising stand with the logo of Vision Style, a company specializing in eye color changing, was found near the body. It all looks as if someone deliberately put her next to the corpse after the murder. From the vice president of the company, Georgy and Irina learn that he recently received a letter with threats and accusations of devilish change in people's appearance. Investigators realize they are dealing with a paranoid fearful of someone with an altered appearance.

After the death of her husband, Margarita Parovaya begins to live on a grand scale, not denying herself anything. Her main goal is to fulfill the dream of her youth and become an actress. But soon the bright horizons of future popularity are darkened by an unexpectedly revealed fact. It turns out that her husband did not die a natural death, but was poisoned, and the widow, who had gone into isolation, becomes the main suspect.

Immediately after the death of the father, between the children - Alla and Yevgeny Kostetsky - there are insoluble disputes over the burial of the body. Eugene insists on a traditional funeral, Alla insists on freezing the body in liquid nitrogen. Passions were not destined to boil for long: soon Alla was found dead.

An ophthalmologist, secretly suffering from schizophrenia and following his own theory of treating the disease, conducts experimental operations on mentally ill patients. He kills a psychiatrist, whose unexpected intervention could reveal his secret.

Police ensign Kalashnikov tirelessly conflicts with his superiors and colleagues. He does not find a place for himself and at home: he rushes about all night long, hiding from imaginary pursuers, which causes concern for his neighbor in a communal apartment. Soon Kalashnikov falls under suspicion of murder.