The TV series "The Exorcist" is a Russian detective drama about the confrontation between a brilliant psychotherapist and a deranged criminal. Alexey practices in a private clinic, where he receives a visit from Vladimir, a businessman suffering from obsessive thoughts. Session after session, Vladimir shares his elaborate fantasies with the doctor. Meanwhile, in the city, little girls start disappearing. Alexey begins to suspect that his new patient is somehow connected to these disappearances. He decides to investigate.