An investigation into the murder of a Wall Street trader takes a shocking turn when Castle and Beckett discover Gates' estranged sister is involved.
When Castle and Beckett investigate the mysterious murder of a Japanese ballet dancer, they end up being targeted by a ninja assassin.
Beckett is asked to assist with a narcotics investigation; when a routine undercover operation goes awry, Beckett is faced with dangerous men from the New York underworld.
A guilt-ridden woman confesses to a murder, but contradictory evidence and a second confession complicate the case.
The murder of a high school mean girl points to a teenage telekinetic.
Castle and Beckett are thrust into the world of high fashion.
When a pop star is found dead in an alley, Beckett and Castle look into her hard-partying lifestyle; a shocking revelation rocks the investigation.
The murder of a video store clerk with a secret history leads the team to Castle's father.
Castle and Beckett suspect a serial arsonist of murder; Jenny goes into labor.
A dying man leaves a baby with a priest; Castle and Beckett end up taking care of the baby while they investigate.
When a woman who looks very similar to Lanie is murdered, the team thinks the killer may be targeting members of the 12th precinct.
A well-known relationship therapist is murdered.
Alexis asks Castle for help proving a death row inmate's innocence 72 hours before his execution, but they uncover a secret that could seal the man's fate.
As Castle and Beckett investigate the ritualistic murder of a young woman, they find strange symbols in the victim's apartment; Castle struggles with Alexis' decision to move in with Pi.
A murder suspect claims he has traveled back in time to prevent terrible events from unfolding.
A desperate murder suspect insists on negotiating with Castle.
Castle: 'Murder Most Fowl' Sneak Peek
Moderator and TV host Tom Bergeron asks series creator/executive producer Andrew W. Marlowe how he created "Castle." Cast member Nathan Fillion (Richard Castle), director/executive producer Rob Bowman, and Stana Katic (Kate Beckett) talk about auditions.
Moderator and TV host Tom Bergeron asks cast members Ruben Santiago-Hudson (Roy Montgomery) and Tamala Jones (Lanie Parish) about getting the takes they want.
Cast members Molly Quinn (Alexis Castle) and Seamus Dever (Kevin Ryan) say Nathan Fillion (Richard Castle) is most like his character. Tamala Jones, Ruben Santiago-Hudson, and Jon Huertas talk about their roles.
Castle - 'TICK, TICK, TICK...'
Transporting a priceless diamond puts Ryan and Esposito in serious danger.
The pieces come together for Beckett to realize who Lazarus is and why she got to survive earlier in the woods. Senator Bracken used to owe her one, but not anymore. Next time they meet, things are going to get real.
Castle - Sneak Peek
Castle: 'Close Encounters of the Murderous Kind' Sneak Peek
Beckett tries to get Castle to look at the bright side of Alexis moving into a new place with Pi.
You want me to go in her place?
It’s the coolest life-threatening situation Castle could have hoped for.
This could be one enormous wedding.
Cast members Tamala Jones (Lanie Parish), Ruben Santiago-Hudson (Captain Roy Montgomery), Jon Huertas (Javier Esposito), and Molly Quinn (Alexis Castle) talk about Twitter and say Nathan Fillion (Richard Castle) is to blame for starting them to tweet.
He needs to know who she's been with other than him in the past 6 months.
Download the TV Guide app for iPhone, iPad and Android!