Who Are You?

Inga returns from the USA, where she was retained as a profiler at the FBI. She persuades her uncle, the head of the police department, to take her as a consultant. Later he introduces Inga to Major Mischenko. That meeting became tense given that, just last year, the Major didn't believe her while investigating the suspicious deaths of her patients.

The next morning, the investigation team gets a new task. It turns out the actress, who came to police in the first episode was murdered. The detectives don't listen to Inga. She goes to the late actress's flat, where she meets the murderer, the victim's old friend and secret lover. He tries to kill Inga, but at the last moment, hearing the voice of an electrician, he flees.

An anonymous man tells Inga he has information about her fiancé Jerry, who disappeared in the catacombs two years ago. Inga meets with the man; Oleg follows her and saves her from a car accident. He tries to explain everything, but she assures him she's ok and the crash was accidental. The hacker who helps the department finds that the owner of the car is owned by a famous art gallery owner.

The art gallery owner tells Oleg that he lent his car to his old friend Yakovleva, who hates Inga claiming she killed her fiancé. She begins to threaten Inga. Meanwhile, the crew receives a new case. The chief of a foundation is found dead at the their warehouse. The team solves the case the next day. The murder happened by accident.

Stepanych, one of the crew's detectives, doesn't show up at work. Mischenko Stepanych's daughter has disappeared. The internal security team visits Strizhak to check Taran's report. Later Strizhak reprimands Oleg and says they must let Taran go. Shpak fights Taran and Stepanych's ex-wife suddenly appears in the midst of the conflict with the details of their daughter's disappearance.

The crew gets a new case. A politician's daughter is found dead near a riverbank. Mischenko says the girl looks exactly like Stepanych's daughter. The murderer is a photographer with psychological trauma. Inga figures out where to find Lera, and the girl is found alive. The crew finds a car with dead Yakovleva inside. In her house, the detectives find a photo book containing pictures of Inga.