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?
Castle considers how to fix his relationship with Beckett and finish writing his book, but the pair must investigate a dead man tangled in tree limbs.
When two murders take place on the same night, Castle bets that he and Beckett can solve their case before Esposito and Ryan can solve the other one, but strange twists force the teams to work together.
The mysterious circumstances surrounding an Arctic explorer's death take Castle and Beckett to the halls of the CIA; Castle believes the killer may be fooling the investigators.
Castle's book agent (Debi Mazar) approaches him with a career-changing opportunity, but accepting it would mean the end of his relationship with Beckett; an unidentified woman is found dead in a manhole.
Castle and Beckett go to a graveyard after the body of a young man sporting vampire fangs is discovered with a wooden stake through his heart.
An up-and-coming rock star's body is found in a scene that appears staged from her recent music video.
While investigating the murder of a bike messenger, Castle and Beckett are forced to uncover the scandals and secrets of a prominent family.
Castle and Beckett are thrust into the world of ex-cons and escorts while investigating an assistant district attorney's murder; Castle's daughter shares a secret with Beckett.
A dead man is found stuffed in a garbage chute; Castle and Beckett have their hands full when two women arrive to identify the body- the man's wife and his fiancee.
When an art dealer is shot in his gallery, Castle and Beckett discover that a bullet is missing from the crime scene.
While investigating the death of a bridesmaid at a wedding, Castle runs into an old flame (Alyssa Milano).
While investigating an Irish mobster's death, Beckett and Castle uncover a local turf war that may be connected to an infomercial guru and an international drug-smuggling operation; evidence causes the case to become personal for Beckett.
A family discovers a dead man in the house; Castle is featured as one of New York's most-eligible bachelors.
A beloved former professional baseball player is murdered; Alexis' genealogy project forces Castle to contemplate the identity of his father.
A half-naked woman is found hanging by bondage cuffs in a public park; the investigation takes Castle and Beckett into New York's underground world of sexual domination.
An accomplished and insightful federal investigator (Dana Delany) helps Castle and Beckett track down a serial killer.
The investigation into a museum curator's death takes a bizarre turn when Castle and Beckett learn he is not the first member of a recent archaeological expedition to die.
When talk show host Bobby Mann (Tom Bergeron) mysteriously dies, Castle is convinced that there was foul play; a guest on Bobby Mann's show (Kelly Carlson) seduces Castle.
Castle and Beckett find that Esposito has a personal connection to a suspected killer; Beckett connects with an attractive new detective.
A well-known chef is found frozen to death in the kitchen of a New York restaurant; Castle shares an attraction with a former classmate of Beckett's.
A robbery-homicide prompts Beckett to invite Demming to assist on a case; the investigation becomes a competition for Beckett's attention.
Castle and Beckett investigate what seems to be an intelligence operative's assassination; Beckett's relationship with Demming strains her relationship with Castle.
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