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 returns with a change of city and jobs for Kate Beckett. After saying "yes," Beckett moved to D.C. where her job with the AG's office isn't going as well as she hoped.
Beckett must use her wits to stay alive when she goes up against a powerful foe in "The Belly of the Beast."
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.
Castle got off to a very strong start with "XY." The dual perspective of the episode an enticing entrance that will set off a season long arc, something the series sorely needed.
In "Like Father, Like Daughter," Alexis seeks the help of her dad to clear a man who's just 72 hours way being executed.
“XX” opens up right where “XY” ended with Beckett looking out the window of a seized drug house with the bad guys rolling up. Her and Vikram share a moment of reflection before they try to get some sleep.
“Reckoning” picks up almost immediately after where “Resurrection” left off with Castle and the boys arriving where an unknown third party at the behest of Tyson and Nieman snatched Beckett.
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.
The murder of a young video store clerk takes a strange turn when the team discovers his past history as a high-level hacker.