8.2/101,399 votes#1 - XY (1)
Season 8 Episode 1 - Aired 9/21/2015
After passing the Captain's exam last season, Beckett was surprised with an offer to run for State Senate. In the action packed season premiere, Castle and Beckett are adjusting to Beckett's career change, when a call from a mysterious stranger sets off an explosive chain of events. There are two sides to every story, and this unique two-parter will explore the same story from each of their perspectives, first from Castle's side as he searches for Beckett.
Director: Rob Bowman
Writer: Alexi Hawley, Terence Paul Winter
7.2/101,272 votes#2 - XX (2)
Season 8 Episode 2 - Aired 9/28/2015
Beckett's side of her abrupt disappearance is revealed. After receiving a mysterious tip from her past, Beckett is launched into a fight for her life, with a team of mercenaries hot on her trail. While Castle investigates why his wife is on the run, Beckett must figure out who wants her dead, before they can finish the job.
Director: Paul Holahan
Writer: Alexi Hawley, Terence Paul Winter
7.4/101,022 votes#3 - PhDead
Season 8 Episode 3 - Aired 10/5/2015
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. However, he and Beckett soon discover that behind the fun and games of college are some darker secrets the university wants to keep hidden.
Director: Rob Bowman
Writer: Chad Gomez Creasey
7.2/10939 votes#4 - What Lies Beneath
Season 8 Episode 4 - Aired 10/12/2015
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.
Director: Larry Shaw
Writer: Barry O'Brien
8.2/101,113 votes#5 - The Nose
Season 8 Episode 5 - Aired 10/19/2015
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.
Director: Steve Robin
Writer: Nancy Kiu
7.9/101,008 votes#6 - Cool Boys
Season 8 Episode 6 - Aired 11/9/2015
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 suspect in the heist turned murder, while Castle has to determine whether he’s guilty or help to prove he’s innocent.
Director: Paul Holahan
Writer: Alexi Hawley
7.8/10922 votes#7 - The Last Seduction
Season 8 Episode 7 - Aired 11/16/2015
In order to hunt down the brutal murderer of a grifting seducer, Castle & Beckett must investigate New York’s elite. Meanwhile, Castle plans to surprise Beckett on their one-year wedding anniversary.
Director: John Terlesky
Writer: Rob Hanning
7.6/10914 votes#8 - Mr. & Mrs. Castle
Season 8 Episode 8 - Aired 11/23/2015
Castle and Beckett investigate the murder of a cruise ship entertainer, only to find themselves trapped at sea with the killer.
Director: Jeff Bleckner
Writer: Christine Roum
7.5/10925 votes#9 - Tone Death
Season 8 Episode 9 - Aired 2/8/2016
When a body is found in the theater of Martha’s latest show, Castle and Beckett’s investigation leads them into the unexpectedly dangerous world of competitive a capella.
Director: Hanelle M. Culpepper
Writer: Robert Bella
8.0/10907 votes#10 - Witness for the Prosecution
Season 8 Episode 10 - Aired 2/14/2016
Castle finally gets his day in court when he takes the stand as the key witness to a murder from five months ago. But when new information suddenly arises, he and Beckett must race against the clock to prevent a miscarriage of justice.
Director: Bill Roe
Writer: Terence Paul Winter
8.0/10904 votes#11 - Dead Red
Season 8 Episode 11 - Aired 2/15/2016
When the son of a Russian diplomat turns up murdered, Beckett and Castle find themselves in a dangerous game of international crime and punishment, with Castle having to entertain a jovial Russian security officer who winds up more involved than anyone planned.
Director: Jeannot Szwarc
Writer: Jim Adler
8.5/10990 votes#12 - The Blame Game
Season 8 Episode 12 - Aired 2/22/2016
Castle is captured and forced to work with strangers to solve deranged puzzles and mind games, while Beckett and the 12th Precinct must race against time to rescue Castle and catch a killer.
Director: Jessica Yu
Writer: Michal Zebede
7.5/10844 votes#13 - And Justice for All
Season 8 Episode 13 - Aired 2/29/2016
Beckett and the 12th Precinct look into the murder of an English as a Second Language student. But when the victim's class won't talk to the police, Castle goes undercover as a French Canadian immigrant and learns that the victim was more than he seemed.
Director: Kate Woods
Writer: Adam Frost
7.8/10902 votes#14 - The G.D.S.
Season 8 Episode 14 - Aired 3/7/2016
Castle returns to the City of Angels in search of answers about his missing time. But things take a deadly turn when he’s recruited by the legendary Greatest Detective Society to help solve a murder.
Director: John Terlesky
Writer: Alexi Hawley
7.7/10855 votes#15 - Fidelis Ad Mortem
Season 8 Episode 15 - Aired 3/21/2016
When a recruit officer at the NYPD Academy is killed, Beckett and the team go back to their old training ground to investigate. Meanwhile, Castle must reckon with a decision with profound consequences for him and Beckett.
Director: Rob Bowman
Writer: Chad Gomez Creasey
8.0/10857 votes#16 - Heartbreaker
Season 8 Episode 16 - Aired 4/4/2016
A clue at the scene of the death of an armored-car driver leads Beckett and Castle back to an old case solved by Esposito. But complications arise when they learn that Esposito might not have been telling them everything about his past with the culprit.
Director: Thomas J. Wright
Writer: Barry O'Brien
7.6/10811 votes#17 - Death Wish
Season 8 Episode 17 - Aired 4/11/2016
The murder of a man connected to smuggling Turkish relics sends Castle, Beckett and the 12th Precinct on a search for a stolen antique believed to be Aladdin’s lamp, in hopes that it can lead them to the killer.
Director: Bill Roe
Writer: Stephanie Hicks
7.5/10783 votes#18 - Backstabber
Season 8 Episode 18 - Aired 4/18/2016
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.
Director: Jessica Yu
Writer: Robert Bella
8.0/10882 votes#19 - Dead Again
Season 8 Episode 19 - Aired 4/25/2016
When a mild mannered safety inspector for the city miraculously survives a poisoning, it might be luck; but when he survives another, it’s a mystery Castle and Beckett will have to solve.
Director: Bill Roe
Writer: Rob Hanning
7.4/10783 votes#20 - Much Ado About Murder
Season 8 Episode 20 - Aired 5/2/2016
After a movie star turned theater actor is mysteriously killed, Castle and Beckett go backstage and learn the star had more to worry about than just his lines.
Director: Hanelle M. Culpepper
Writer: Christine Roum
7.9/10821 votes#21 - Hell to Pay
Season 8 Episode 21 - Aired 5/9/2016
When an axe-wielding, escaped psychiatric inmate drops dead in Castle’s P.I. office, Castle and Beckett’s investigation leads Castle to suspect the victim’s death could be the work of the Antichrist.
Director: John Terlesky
Writer: N/A
7.0/101,459 votes#22 - Crossfire
Season 8 Episode 22 - Aired 5/16/2016
With their best lead in hand, Castle and Beckett are ready to take on LokSat. But an unforeseen twist puts their case – and their lives – in jeopardy.
Director: Rob Bowman
Writer: Alexi Hawley, Terence Paul Winter
The Best Episodes of Castle Season 8
Every episode of Castle Season 8 ranked from best to worst. Discover the Best Episodes of Castle Season 8!
After a serial killer imitates the plots of his novels, successful mystery novelist Richard "Rick" Castle receives permission from the Mayor of New York City...
Genres:DramaCrime
Network:ABC
Season 8 Ratings Summary
"XY (1)" is the best rated episode of "Castle" season 8. It scored 8.2/10 based on 1399 votes. Directed by Rob Bowman and written by Alexi Hawley, Terence Paul Winter, it aired on 9/21/2015. This episode is rated 1.0 points higher than the second-best, "XX (2)".