In "Limelight," Castle and Beckett investigate the murder of a young woman.
The murder of a young video store clerk takes a strange turn when the team discovers his past history as a high-level hacker. But it’s nothing compared to the shock Castle receives when their investigation leads them straight to his father, Jackson Hunt.
Castle and Beckett discover that the victim of a building fire was actually shot to death, they get on the trail of a serial arsonist turned murderer. Meanwhile, Ryan’s wife, Jenny, goes into labor, but disaster threatens to ruin the joyous moment.
A bleeding man stumbles into a church, but just before dying, he hands a mysterious bundle to the priest. When the bundle turns out to be a smiling baby boy, Castle and Beckett find themselves accidental nannies to the newborn.
When a woman who looks very similar to Lanie is murdered, the team thinks the killer may be targeting members of the 12th precinct.
When a famed relationship therapist is murdered, it appears that her access to the secrets of her elite and powerful clients led to her death.
Alexis enlists Castle's help on an Innocence Review case to prove that a death row inmate, Frank Henson (guest star James Carpinello, "The Good Wife"), was wrongly convicted.
Castle and Beckett investigate the bizarre murder of a young woman who was found ritually posed.
In "Time Will Tell", a murder suspect claims he's a time traveler from the future who's trying to prevent disastrous events from unfolding.
A desperate young murder suspect, Emma Briggs, takes hostages at gunpoint then mysteriously insists that she will only negotiate with one person: Richard Castle