Genre: Crime Drama, Comedy
Summary: Bored with his success, celebrated mystery novelist Rick Castle teams with NYPD Detective Kate Beckett to solve the case of a copycat killer who re-creates murder scenes from Rick's novels. While solving the case, the two realize that their unorthodox partnership has its benefits and decide to continue working together. Combining his writer's intuition with her creative detective work, they investigate strange homicides in New York, all the while building a strong, if complicated, relationship with each other.
|Episode Online Video|
S02, E22 (First Aired:
A well-known chef is found frozen to death in the kitchen of a New York restaurant; Castle shares an attraction with a former classmate of Beckett's.
S02, E23 (First Aired:
A robbery-homicide prompts Beckett to invite Demming to assist on a case; the investigation becomes a competition for Beckett's attention.
S02, E24 (First Aired:
Castle and Beckett investigate what seems to be an intelligence operative's assassination; Beckett's relationship with Demming strains her relationship with Castle.
S03, E01 (First Aired:
When Beckett and her team burst into an apartment on a murderer's trail, they see Castle standing over a dead woman's body holding a gun; Beckett arrests Castle as he asserts his innocence.
S03, E02 (First Aired:
Beckett and Castle search for a psychic's killer while debating the existence of extrasensory abilities.
S03, E03 (First Aired:
When a coded document attracts Castle's attention, Beckett must steer the case back to the violent felons who populated their victim's world; when Beckett's ex-partner arrives, Castle must watch the relationship become romantic.
S03, E04 (First Aired:
A young mathematician is shot with a 200-year-old bullet, inspiring wild theories by Castle about a time-traveling murderer.
S03, E05 (First Aired:
An unknown woman falls out of a casket along with the original deceased when pallbearers lose control of the casket at a funeral; the investigation takes Beckett and Castle into the world of amorous, bed-hopping physicians.
S03, E06 (First Aired:
When a beautiful woman is found dead, the evidence indicates a notorious serial killer known as ``The Triple Killer.''
S03, E07 (First Aired:
When Beckett and Castle respond to an ``officer down'' call, they discover the victim is actually a male stripper dressed as a cop.
S03, E08 (First Aired:
While investigating a subway worker's murder in Central Park, Castle and Beckett unexpectedly uncover a boy's abduction.
S03, E09 (First Aired:
When a prominent astrophysicist is found dead in her car, Castle is led to theorize her death was the result of an alien abduction.
S03, E10 (First Aired:
When a bar owner's body is found in the East River, the investigation takes Castle and Beckett through the forgotten tunnels and passageways of turn-of-the-century New York; Castle considers buying a bar.
S03, E11 (First Aired:
When Castle's novel ``Heat Wave'' becomes a movie, actress Natalie Rhodes accepts Beckett's invitation to visit and learn about the character she will play; Natalie observes Castle and Beckett's investigation of the murder of a matchmaker.
S03, E12 (First Aired:
The owner of a historic magic shop is found dead in Houdini's water torture tank; a new romance comes to light.
S03, E13 (First Aired:
The retired lead detective on Beckett's mother's homicide case is gunned down after telling her he has new information; Castle and Beckett's partnership grows stronger.
S03, E14 (First Aired:
The murder of a lottery winner leaves Castle and Beckett with a wealth of suspects; Martha must decide what to do with her inheritance.
S03, E18 (First Aired:
When the head writer on a popular soap opera is killed with a fire axe, Castle is able to use his skills as an author to make a discovery about the killer.
S03, E16 (First Aired:
While investigating an apparent robbery/homicide, Beckett and Castle discover the victim was involved in a mysterious conspiracy; as the stakes rise, a federal agent (Adrian Pasdar) takes over the case.
S03, E17 (First Aired:
Castle and Beckett must set aside their differences with Agent Fallon (Adrian Pasdar) while trying to prevent a city-wide catastrophe.
S03, E19 (First Aired:
A juror suddenly dies during a high-profile trial involving a murdered socialite.
S03, E20 (First Aired:
When a reporter is found dead inside a pizza oven, Castle and Beckett try to determine why he was murdered.
S03, E21 (First Aired:
Castle and Beckett investigate the death of a champion swimmer; authors Michael Connelly and Dennis Lehane give Castle advice.
S03, E22 (First Aired:
Against orders, Beckett travels to Los Angeles while investigating her ex-partner's murder; Castle questions Beckett's motives.
S03, E23 (First Aired:
After a contestant in a beauty pageant is found strangled, many suspects turn up, including jealous fellow contestants, the pageant's sponsor (Michael McKean), and the show's host (Sasha Roiz).
S03, E24 (First Aired:
A professional hit man (Max Martini) with information about the murder of Beckett's mother escapes during a court hearing; Castle and the team uncover a deep conspiracy.
S04, E01 (First Aired:
Detective Beckett struggles to survive; Castle tries to identify the shooter; Ryan and Esposito try to adjust to the new captain.
S04, E02 (First Aired:
Castle and Beckett suspect a costume-clad vigilante is responsible for the mysterious murder of an ex-con.
S04, E03 (First Aired:
Castle and Beckett investigate a crime scene that involves a large pool of blood but no victim; Alexis receives news about Stanford.
S04, E04 (First Aired:
When a young woman is shot to death, Beckett and Castle learn the gun used was the one a serial killer stole from Detective Ryan.
S04, E05 (First Aired:
A sexy insurance investigator (Kristin Lehman) with a secret helps Castle and Beckett when a valuable sculpture is stolen and someone is murdered; a rich museum benefactor (Jessica Tuck) garners suspicion.
S04, E06 (First Aired:
Castle and Beckett investigate the murder of a ghost hunter who was looking into a haunting at a New York mansion.
S04, E07 (First Aired:
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).
S04, E08 (First Aired:
When a casino owner is murdered at an abandoned warehouse, suspects emerge in New York and Atlantic City; during the investigation, Castle throws an impromptu bachelor party for Ryan.
S04, E09 (First Aired:
The team searches for a sniper who is terrorizing New York; Beckett tries to hide her worsening condition from Castle and the detectives.
S04, E10 (First Aired:
Beckett and Castle wake up handcuffed together in bed in a locked room with no memory of how they got there.
S04, E11 (First Aired:
When Castle and Beckett investigate the death of a ladies' man, a twist in the case may disrupt Ryan's wedding.
S04, E12 (First Aired:
When a woman is found dead in her car, the investigation leads to New York Mayor Robert Weldon (Derek Webster), one of Castle's longtime friends.
S04, E13 (First Aired:
The investigation into the death of a famous dog trainer leads to a reality-TV star.
S04, E14 (First Aired:
Castle and Beckett must investigate a mysterious case from 1947 in order to solve the present-day murder of a treasure hunter.