Episode Guide
Always - Season Finale
Season 4, Ep. 23
Castle tries to protect Beckett as she pursues the man who shot her; the 12th precinct is forever changed as feelings and secrets are revealed.
First aired on May 7, 2012.
Undead Again
Season 4, Ep. 22
When a dead man is found with human bite marks on his body, a witness claims the deceased was attacked by a zombie.
First aired on April 30, 2012.
Headhunters
Season 4, Ep. 21
Castle takes on Detective Ethan Slaughter (Adam Baldwin) as his partner when tension between himself and Beckett rises, and he sees a new side to police work that puts him in danger.
First aired on April 16, 2012.
The Limey
Season 4, Ep. 20
An attractive detective from Scotland Yard (Brett Tucker) teams up with Castle and Beckett to investigate the murder of his friend's daughter; Lanie tries to talk Beckett into making a move on Castle.
First aired on April 2, 2012.
47 Seconds
Season 4, Ep. 19
When a bomb kills five people at a protest rally, Beckett and Castle try to solve the case by reconstructing the 47 seconds prior to the explosion.
First aired on March 26, 2012.
A Dance With Death
Season 4, Ep. 18
The investigation into the death of a contestant on a popular dance competition show leads Castle and Beckett to a shocking secret that may have led to her death.
First aired on March 19, 2012.
Linchpin
Season 4, Ep. 16
Beckett and Castle must stop a series of events that could result in a war, featuring guest star Jennifer Beals from "Flashdance."
First aired on February 20, 2012.
Once Upon A Crime
Season 4, Ep. 17
When two women are found dead dressed as fairytale characters, Castle and Beckett must race to find the killer before he strikes again.
Pandora
Season 4, Ep. 15
In the first episode of a two-part "Castle" event, Castle and Beckett pursue a ruthless killer who, they discover, is part of a sinister, international conspiracy. Castle and Beckett are joined by Sophia Conrad (guest star Jennifer Beals, "Flashdance"), a smart, sexy CIA operative who has a complicated past with Castle.
First aired on February 13, 2012.
The Blue Butterfly
Season 4, Ep. 14
When Castle and Beckett investigate the killing of a treasure hunter, they discover the case is linked to a mysterious homicide from 1947 involving a hard-boiled private detective.
Original Air Date: February 6, 2012
An Emabarrassment of Bitches
Season 4, Ep. 13
When a famous dog trainer is killed, the investigation keeps coming back to charismatic reality TV star Kay Cappuccio. Kay, a favorite of tabloids and gossip websites the world over, has achieved stardom without possessing any discernible skill or talent.
View Gallery ►Dial M For Mayor
Season 4, Ep. 12
It was Mayor Weldon's political clout that allowed Castle to partner up with Beckett, but now, when a woman is found dead in a car that traces back to the Mayor's motor pool, that partnership comes under fire.
View Gallery ►Till Death Do Us Part
Season 4, Ep. 11
When a lothario is killed, Castle and Beckett suspect that the victim's mysterious double life holds the key to his murder. Their investigation leads to a shocking twist that threatens to disrupt Ryan's wedding with Jenny.
View Gallery ►Cuffed
Season 4, Ep. 10
Beckett and Castle wake up handcuffed together in bed in a locked room with no memory of how they got there.
Kill Shot
Season 4, Ep. 9
A sniper on a killing spree is terrorizing New York City. With the clock ticking down to the next murder and nothing to go on except a killer with no apparent motive but to instill terror, this could prove the team's toughest case yet. The hunt is made even more complicated when Beckett begins to experience increasingly strong moments of PTSD - moments she tries hard to hide from Castle and the detectives.
Heartbreak Hotel
Season 4, Ep. 8
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Cops & Robbers
Season 4, Ep. 7
Martha and Castle are held hostage by bank robbers dressed in hospital scrubs; Beckett's rescue efforts are hindered by a strict hostage negotiator (Dean Norris).
Demons
Season 4, Ep. 6
Castle and Beckett investigate the murder of a ghost hunter who was looking into a haunting at a New York mansion.
Eye of the Beholder
Season 4, Ep. 5
An insurance investigator assists Castle and Beckett with a homicide case stemming from the theft of a costly sculpture, and a museum benefactor becomes one of the murder suspects.
Kick The Ballistics
Season 4, Ep. 4
While investigating the mysterious shooting death of a young woman, Castle and Beckett face a cop's worst nightmare when they discover that the gun used in the killing is Det. Ryan's old service weapon - the one that was stolen by the serial killer, 3XK. Now with the clock ticking, the team must work to solve the murder, track down 3XK and retrieve Ryan's gun before the killer strikes again.
Head Case
Season 4, Ep. 3
Gunshots, a fleeing van and a massive blood pool all point to murder, but when Castle & Beckett arrive at the crime scene, they discover that it lacks something - the victim! The investigation leads to the cutting-edge world of life-extension science, a cunning high-tech researcher (guest star William Atherton), and a sleazy porn mogul who invested in a modern-day "fountain of youth." Meanwhile, Alexis finds out whether she got into Stanford.
Heroes & Villains
Season 4, Ep. 2
When an ex-con is mysteriously slain in an alley, Castle and Beckett believe a vigilante is behind the murder. But efforts to identify their suspect are thwarted when they discover that he roams the city in a Superhero costume -- and may indeed be a Superhero. Can they capture and unmask the killer before he strikes again?
Rise -- Premiere
Season 4, Ep. 1
A wounded Beckett fights to stay alive as Castle investigates her shooting. The precinct's tough new captain takes charge.
Knockout
Season 3, Ep. 24
A hit man who has information about the murder of Beckett's mother escapes during a hearing. The manhunt leads Beckett to a law-enforcement figure tied to both the escape and her mom's death.
View Gallery ►Pretty Dead
Season 3, Ep. 23
Castle and Beckett investigate the murder of a contestant in a beauty pageant "Miss Illinois", found strangled during the rehearsal for "Baron's All-American Beauty Pageant". As the investigation goes on, they find out that several people had motive to kill the victim.
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