The episode starts out with Richard Castle talking at a book signing then switches to a different scene where a man is putting flower petals on a woman.
Detectives find the woman and Detective Beckett talks about how the flowers on the woman cover her. She then tells the other detectives that she recognizes the way of killing. Everyone asks her where and she says from a book.
Switch back to Castle talking to his daughter and mother when Beckett comes and takes Castle in for questioning. When everyone figures out that it was not Castle because he has an air tight alibi. The next day Beckett brings Castles books to the office.
Castle then assists with the investigation. When Beckett says they have to wait a week before they get a match on the prints. Castle calls the mayor and they then get the print with in an hour. Beckett gets a phone call saying that they found another body.
At the scene Beckett gets a match to the prints so they go to a mans house where they find an insane man who is thought to be the killer.
Castle doesn't believe that the supposed killer is really the killer. He talks to his daughter and Beckett and they go to Mr. Tisdale. After the meeting with Tisdale Castle says that Tisdale is dying and they begin to suspect Mr. Tisdale's son because Mr. Tisdale was going to give most of his money to his daughter (who was the girl covered with petals). When detectives and Castle get to Tisdale's apartment Beckett handcuffs Castle to the Car.
The police knock on son Tisdale's door, we see Tisdales shredding documents.
Castle grabs a handcuff key and begins to unlock the handcuffs when he sees Tisdale, Castle chases him with one shoe off and Detective Beckett tells Castle to stop chasing Tisdale.
When Beckett follows she finds Tisdale with a gun to Castles head. She then talks to Tisdale and he confesses saying he was the one that worked so hard but never got credit. Tisdale lowers his weapon and Beckett arrests him.
Beckett comes to the office and sees Castle with her boss who calls her over. He says that the mayor wants Castle to work with her so he can get a new character and study for his next books.





