When viewers first met Richard Castle, a famous mystery novelist, he was creatively blocked. But when the NYPD questioned him in connection with a series of murders staged to imitate crime scenes from his books, Castle found inspiration in NYPD Detective Kate Beckett. Once that initial case was solved, Castle and Beckett continued to investigate strange homicides in New York, combining Castle's writer intuition and Beckett's creative detective work. In the Season 7 finale, Beckett was faced with a choice about her future. Now that she's been promoted to Captain, how will New York's famous couple adapt in Season 8?
When a movie star turned stage actor is mysteriously killed, Castle goes backstage to investigate.
A city safety inspector survives being poisoned, then tries to help Castle with the investigation.
Castle and Beckett search for a stolen antique that may have been Aladdin's lamp in the hope it will lead them to a smuggler's murderer.
The death of an armored-car driver leads Beckett and Castle to one of Esposito's old cases.
Beckett returns to her NYPD training ground to investigate the murder of a recruit officer.
Castle goes to Los Angeles in hopes of finding answers about the time he cannot remember.
When a student who takes English as a second language is murdered, Castle goes under cover.
Castle is abducted and forced to solve deranged puzzles and mind games with strangers.
Castle and Beckett investigate when a corpse is discovered in the theater of Martha's latest show.
Castle and Beckett investigate the murder of a cruise ship entertainer, only to find themselves trapped at sea with the killer.
Detective Slaughter (guest star Adam Baldwin) returns to enlist Castle’s help in solving a high-stakes robbery case.
When a priceless piece of art is stolen during transport, Castle and Beckett work with a special witness to track down the culprit.
Castle is determined to figure out who murdered his idol, a reclusive author, but the truth seems to be stranger than fiction.
Castle goes undercover as a professor when a college student is found gruesomely murdered.
Beckett receives a mysterious tip and is launched into a fight for her life with mercenaries on her tail; Castle tries to determine why his wife is on the run.
A call from a mysterious stranger ignites an explosive chain of events; the story is told from Castle's perspective as he searches for Beckett.