"On" is a cult novel by the Swedish writer Jan Gunter Brusson, which started a new genre - "psychological thriller". The book tells the story of an intellectual psychopath who masterfully hides his true image under the veil of normality. The author traces the psychological dynamics of the main character, developing a subtle game between internal demons and the outside world. "He" is an amazingly intense novel that leaves the reader open to new realities and prompts to look for the truth where you least expect it.