With their best lead in hand, Castle and Beckett are ready to take on LokSat. But an unforeseen twist puts their case – and their lives – in jeopardy.
Castle thinks the Antichrist maybe involved in the death of an axe wielding psychiatric inmate who drops dead in the P.I. office.
When a movie star turn stage actor is mysteriously killed, Castle and Beckett go backstage and discover he had more than his lines to worry about.
When a mild mannered safety inspector for the city (guest star Jonathan Silverman) miraculously survives a poisoning, it might be luck; but when he survives another, it’s a mystery Castle and Beckett will have to solve.
After Hayley does a favor for an old friend, she finds herself implicated in a killing and cyber-terror attack. Now, Beckett and Castle must rush to solve the case and clear Hayley’s name.
The murder of a man connected to smuggling Turkish relics sends Castle, Beckett and the 12th Precinct on a search for a stolen antique believed to be Aladdin’s lamp, in hopes that it can lead them to the killer.
A clue at the scene of the death of an armored-car driver leads Beckett and Castle back to an old case solved by Esposito. But complications arise when they learn that Esposito might not have been telling them everything about his past with the culprit.
When a recruit officer at the NYPD Academy is killed, Beckett and the team go back to their old training ground to investigate. Meanwhile, Castle must reckon with a decision with profound consequences for him and Beckett.
Castle goes to Los Angeles in hopes of finding answers about the time he can't remember, but ends up in danger when he is recruited by the Greatest Detective Society.
Beckett and the 12th Precinct look into the murder of an English as a Second Langue student. But when the victim’s class won’t talk to the police, Castle goes undercover as a French Canadian immigrant and learns that the victim was more than he seemed.