To write the perfect thriller I had to get into the mind of a murderer. Now I can't get out.

Mitchell Osgood dreams of being a famous writer, but the book he has written constantly is rejected by the editors. When the psychopathic killer Albert Merrik is released from prison after 15 years, Osgood believes that writing down the history of his crimes could be his breakthrough. Although he refuses to talk to him at first, Osgood follows him around and offers him a job in his book shop. To get the right impressions for his book, he feels that he has to experience Merrik psychopathic again.