The puzzle begins to take shape, it remains to solve it. The FSB receives a dossier on Academician Gromov. Pavlov learns about innovative research and its implications. Marina is ready to break the shackles of slavery and leave the mediator in the past. But to gain freedom, sometimes you need to stop running from reality, no matter how cruel it may be. Masha visits the laboratory, which helps teenagers. She makes inquiries about one of the patients, not suspecting who really needs help right now.

Everyone needs clarity in their relationships, except, perhaps, the mediator. He is not ready to tell everyone the truth about himself. Vera is not as submissive as her uncomplaining rival, and with an unexpected ally, she has the last word. Masha does not believe that the Knight is responsible for the deaths of the children. The discovery in the mailbox only reinforces these doubts. Participation in the FSB operation does not go unnoticed for Sasha: something strange is happening to her.

While some are putting their lives in the wrong hands, others are walking over their heads for their own purpose. Information is the most profitable investment and the most quoted commodity, without which neither money nor position in society are worth anything. The mentor asks Masha to stay away from the mediator — he has something to hide about his past. But the one who is finally ready to meet Sasha has no less secrets.

It is very difficult for Masha to maintain an informal relationship with a mediator, and for him to avoid a fan who is ready to become his slave. Together, the partners are investigating a terrorist attack that killed teenage girls from a youth sports school.

The mother of the deceased teenager claims Gromov's inheritance, but she is not acting alone. Vera is shattered: her brother turned against her, but for the mediator, both this case and herself are in the past. But it will be much more difficult to step over Marina. Words mean nothing to her. And the negotiator proceeds to take decisive action. After all, his help is needed by another person who is confident in the existence of the secret of an ideal relationship.

Despite all the danger, the mediator wants Sasha to enter into correspondence with an anonymous person and play the role of bait. The FSB finds out that Gromov's heir contacted him shortly before his death. Secrets are a common thing for this family, but they cannot be hidden any further. Marina continues to pursue the mediator and penetrates where she was definitely not invited — into his past. Will she get her way?

Marina hopes to continue her relationship with the mediator and demonstrates a determined attitude to her rival. Masha comes to the conclusion that the dead teenagers were trying to sort out family secrets. And these searches led them to the darknet. Pavel, like her, needs to talk to the mother of Gromov's new heir. What made a teenager commit suicide? Masha may be kicked out of the FSB because of an affair with a married actor. Andrey knows exactly how to fix everything.

Andrei Pavlov's methods are proving to be very effective: the academician's heirs are already ready to sell their shares. But, alas, an unpleasant surprise awaits them. Besides, this is not the only problem of the deal. Marina gives the mediator a showdown: his latest prank goes beyond all bounds. Why wouldn't he leave her alone? There are reasons for this. Pavlov decides to ask Masha for help, and she finds a new clue in the case of teenage suicides.

Recently, cases of teenage suicides have become more frequent. These deaths may be related to a mysterious video on the Internet. FSB officer Maria Rusanova enlists Pavlov to investigate and agrees to her mentor's unexpected proposal. The mediator meets with the girl who wanted to jump off the bridge, and continues to process Vera's brother. She's lying, following his contradictory instructions exactly. Marina is scared: someone is chasing her.

His methods are tough, his actions are frightening, but the result is worth it. An experienced mediator, Andrei Pavlov, goes to the terrorists without a weapon and establishes contact with them. It doesn't cost him anything to stop a soldier who ran away with a gun or to reason with a life-raiser. Andrey's new task is to convince the heirs of the famous academician to sell their stake in the company. But it's not just big businesses that need the help of a negotiator.