The team gets the true crime docuseries treatment when they analyse a recent case featuring a former child actor whose adult life has garnered him a cult following. ...

Officer Nolan's decision to return to school in order to become a training officer proves to be much harder than he expected; Officer Chen considers going into undercover ...

Officer Nolan is taken hostage by a man with nothing to lose; Officer Jackson and his training officer, Officer Doug Stanton, reach a tipping point in their relationship ...

Officer West's relationship with his racist training officer escalates. He needs to work with Sgt. Grey to find a way out. ...

Nolan's mother makes an unexpected visit after a broken engagement. Sgt. Grey wants to retire. ...

NOlan and Harper are assigned to a community policing center in an attempt to rebuild the station's reputation. ...

Nearing the end of the training, Nolan faces his biggest challenge as a police officer yet when he must come to terms with the choices he made in search of the truth. ...

Dean Pelton hires an administrative consultant to organize things at Greendale. ...

Vikram finds out that Caleb is about to meet Loksat's accountant to deliver a memory stick, so Castle and Becket decide to set a trap, leaving the detectives to investiga ...

During a blackout, Castle and Beckett investigate the death of mental asylum patient Gabriel Shaw, who arrived at Castle's PI office carrying an ax. Shaw, apparently, bel ...

Action movie star Zane Cannon was murdered while rehearsing Hamlet, a play with co-star Naomi Fox directed by Erin Cherloff, both seriously reputed. The team soon finds l ...

New York City safety inspector Alan Masters inexplicably survives a poisoning already ruled fatal by Lanie's examination. Despite police protection, he's electrocuted in ...

After planting a spy bug for a private job, Hayley sneaks off while her partner Marcus Janek stays hidden to spy on the lovers couple in another office that nearly caught ...

Castle and Beckett fully enjoy conjugal life again. The team investigates the murder of a man who was digging in Turkey for what seems to be Aladdin's lamp and smuggled i ...

After an armored car driver is killed and some of the money it was carrying stolen, details of the heist start to ring a bell for Esposito regarding a previous theft of g ...

The killing of a police rookie with an NYPD academy service gun is tied to the present class's female top student, so Becket, the best ever, goes undercover. The trail po ...

While in LA to find out more about when he was missing, Castle is greatly flattered to be invited to a meeting of the Greatest Detective Society. On arrival, he finds tha ...

Beckett and the 12th Precinct look into the murder of an English as a Second Language student. When the victim's class won't talk to the police, Castle goes undercover as ...

While Beckett's team investigates the murder of Emma Matthews, Castle is abducted with several, even more puzzled, men to a locked room where they are challenged by cruel ...

Grigory Mishkin, son of Russian consulate diplomat Sergei, is murdered. Castle gets to investigate, closely 'accompanied' by domineering Russian 'security guard' Vasiliy ...

Castle testifies as sole eyewitness in the murder case against the caterer at Roger and Joanna Masters' society party, where he was doing a book reading for charity. When ...

When a corpse is discovered in the theater of Martha's latest show, Castle and Beckett's investigation reveals suprising details about the world of competitive a capella. ...

Castle and Beckett investigate the murder of a cruise ship entertainer, only to find themselves trapped at sea with the killer. ...

Actor Scott McCoy is stabbed 9 times in his home. Castle is asked to join the team as a 'buffer' between bickering Ryan and Esposito. He is also determined to spend time ...

Detective Slaughter returns to enlist Castle's help in solving a high-stakes robbery case. But when a body is found linked to the crime, Slaughter becomes the number one ...

A transporter is murdered to steal a priceless Van Gogh. Castle wriggles into the NYPD investigation by using Mia Laszlo, the only witness, and her hyperosmia (extreme sm ...

Blind Catholic priest Arguello identifies the man murdered in his church as Castle's famously reclusive idol, a one-hit great American novel author. Beckett, reluctantly, ...

When the body of a local college fraternity student is found gruesomely murdered, Castle has to go undercover as a professor in order to gain access to the victim's world ...

Beckett is on the run with Vikram Singh, the CIA analysis who discovered the identity thefts and their purpose, and under mercenary attack, but gets pulled out by Castle' ...

Castle can barely enjoy his cool-renovated office or control Alexis' self-righteous incursion into his PI-business, as Kate goes missing. He finds the inscribed ring he j ...

A death occurs in the woods and Castle becomes obsessed with the case because it reminds him of a pivotal event in his childhood. Beckett reaches a turning point in her l ...

The creator of a sketch-comedy show is murdered, and the investigation yields a surprising secret. ...