21 Sep. 2015XY
A call from a mysterious stranger ignites an explosive chain of events; the story is told from Castle's perspective as he searches for Beckett.
28 Sep. 2015XX
Beckett receives a tip and ends up launched into a fight for her life with mercenaries on her trail. Castle tries to figure out why his wife is on the run.
5 Oct. 2015PhDead
Castle poses as a college professor so he can investigate the gruesome murder of a student while trying to win back the love he thinks he lost in Beckett.
12 Oct. 2015What Lies Beneath
When Castle's idol, a famously reclusive author, turns up dead, Castle is determined to solve his hero's murder. But as he and Beckett dig deeper, they discover that truth is stranger than fiction.
19 Oct. 2015The Nose
When a priceless work of art is stolen and its transporter murdered, Castle and Beckett must work with the key witness to track down the painting and sniff out the killer.
9 Nov. 2015Cool Boys
While Beckett is out of town, Castle becomes involved with Detective Slaughter in a case where a hi-tech chip has been stolen and one of Slaughter's informants is murdered.
16 Nov. 2015The Last Seduction
In order to hunt down the brutal murderer of a grifting seducer, Castle and Beckett must investigate New York's elite. Meanwhile, Castle plans to surprise Beckett on their one-year wedding anniversary.
23 Nov. 2015Mr. & Mrs. Castle
Castle and Beckett investigate the murder of a cruise ship entertainer, only to find themselves trapped at sea with the killer.
8 Feb. 2016Tone Death
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.
14 Feb. 2016Witness for the Prosecution
When Castle takes the stand as the key witness to a murder new information suddenly arises forcing Beckett to race to prevent a miscarriage of justice.
15 Feb. 2016Dead Red
The son of a Russian diplomat is murdered; during the investigation Castle entertains a jovial Russian security guard who turns out to be more involved in the case than expected
22 Feb. 2016The Blame Game
When Castle and Beckett are abducted and forced to solve deranged puzzles and mind games with strangers, Alexis and the 12th precinct race to save them.
29 Feb. 2016And Justice for All
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 a French Canadian immigrant and learns the victim was more than he seemed.
7 Mar. 2016G.D.S.
Castle returns to L.A to find out more about the missing time related to his abduction, when The Greatest Detective Society contacts him and requests his assistance in solving a murder.
21 Mar. 2016Fidelis Ad Mortem
Castle tells Beckett of the video he found of himself in Hollywood. Meanwhile, the NYPD investigates the murder of a police academy student shot dead by a gun belonging to the academy.
4 Apr. 2016Heartbreaker
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 gold coins nine years earlier. Also, Beckett officially moves back in with Castle but is starting to feel that Castle's home network AI, Lucy does not have as much love for her as he does.
11 Apr. 2016Death Wish
Castle and Beckett search for a stolen antique that may have been Aladdin's lamp in the hope it will lead them to a smuggler's murderer.
18 Apr. 2016Backstabber
After Hayley does a favor for an old friend, she finds herself implicated in a killing and cyber-terror attack. Now, Beckett and Castle must rush to solve the case and clear Hayley's name.
25 Apr. 2016Dead Again
When a mild mannered safety inspector for the city survives a poisoning, it might be luck; but when he survives another, it's a mystery Castle and Beckett must solve.
2 May 2016Much Ado About Murder
Castle and Beckett team up to find the killer of a celebrity who was in town starring in Hamlet, while Kevin gets carried away with his daughter's kindergarten play.
9 May 2016Hell to Pay
Castle thinks the Antichrist may be involved in the death of an axe-wielding, psychiatric inmate who drops dead in the P.I. office.
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