Beckett must use her wits to stay alive when she goes up against a powerful foe in "The Belly of the Beast."
"Smells Like Teen Spirit" is a trip down memory lane for Castle and for fans as the episode restores some of the magic lost this season.
In "Number One Fan" Castle negotiates with a troubled murder suspect who claims she's innocent.
In "Limelight," the investigation into a pop star diva's death takes a turn when the investigation reveals the victim was a decoy.
In "Like Father, Like Daughter," Alexis seeks the help of her dad to clear a man who's just 72 hours way being executed.
In "Get a Clue," Castle and Beckett investigatin the ritualistic murder of an accountant and learn there's more than meets the eye to her death.
A secret investigation conducted by Beckett related to her mother's murder goes awry when a man she has been surveilling is killed. When evidence links Beckett to the victim, she and Castle become the target of a manhunt that puts both of them in grave danger.
In "Room 147," multiple confessions to a murder make Castle and Beckett believe their case is more mysterious than meets the eye.
It's a frosty reunion for Captain Gates when the team's current case puts them on a collision path with the U.S. Attorney's office and Gates's sister, Elizabeth Weston.
"Need to Know" wasn't as great as some made it out be. There were some great moments, yes. But once again, the plot fell victim to poor writing.