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Late at night, Mykola Osovskyi, the director of a department store, comes running to the prosecutor's office investigator Artem Nagornyak and tells him that he is being followed by unknown people. The irritated investigator does not believe him. Who in a small town could be following a well-known businessman? If he had believed him right away, Mykola would not have been killed the next night, and a few days later, his friend Andrey Sabanov. The killers were on the loose in the town, driving around in a stolen car. The third victim was almost Osovsky's heir, his uncle Myroslav Antoshevsky, but the unknown persons made a mistake with the poison.