How do you jog the memory of a former mobster to find who killed his boss? You make like it's 1978 and boogie. Castle and Beckett done polyester and laced up the platform shoes to solve a murder mystery.
Beckett must use her wits to stay alive when she goes up against a powerful foe in "The Belly of the Beast."
The day of Castle and Beckett's wedding has arrived but will their big day actually happen? Or will they be denied their moment of happiness?
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 "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.
Castle and Beckett enter the world of extreme sports when they investigate the murder of a rising skateboarding star.
"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 "The Way of the Ninja" Castle and Beckett find themselves confronting a would-be ninja assassin while investigating the death of a Japanese ballet dancer.
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.
In "Number One Fan" Castle negotiates with a troubled murder suspect who claims she's innocent.