Castle: Season 8

2015
22 episodes

In the Season 7 finale, Beckett was faced with a choice about her future. Now that she's been promoted to Captain, how will New York's famous couple adapt in Season 8?

Season 8 of Castle premiered on September 21, 2015 and has 22 episodes, from "XY (1)" to "Crossfire". The last episode aired on May 16, 2016.

Where to watch Castle

In the United States, you can stream Castle on Hulu, Amazon Prime Video and Philo. It is also free on The Roku Channel. You can also buy it on Amazon Video, Apple TV Store, Google Play Movies and Fandango At Home. It is on streaming services in 63 countries.

Where to watch

Episodes

Episode 1XY (1)Aired September 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.
- 44m
- Directed by Rob Bowman
- Written by Alexi Hawley and Terence Paul Winter
Guest stars
- Jack Coleman William Bracken
- Sunkrish Bala Vikram Singh
- Brad Lee Wind Franco Mancini
- Coby Ryan McLaughlin Brooks
- Tim Fields Man
- Jamie Martz Male EMT
- Alla Korot Dry Cleaner
- Daisy Betts A.J.
Episode 2XX (2)Aired September 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.
- 44m
- Directed by Paul Holahan
- Written by Alexi Hawley and Terence Paul Winter
Guest stars
- Jack Coleman William Bracken
- Sunkrish Bala Vikram Singh
- Coby Ryan McLaughlin Brooks
- Ann Cusack Rita
- Alla Korot Dry Cleaner
- Jacqueline Obradors Allison Hyde
- Daisy Betts A.J.
- Daniel Bernhardt Additional Henchman
Episode 3PhDeadAired October 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.
- 44m
- Directed by Rob Bowman
- Written by Chad Gomez Creasey
Guest stars
- Sunkrish Bala Vikram Singh
- Christine Adams Barbara Lillstrom
- Kelly Rowan Carla Feller
- Geoff Pierson Michael Smith
- Madeleine Coghlan Emily
- Justin Prentice Scott Powell
- Brett Wyman Frat Boy
- Curtis Hamilton Guard with Sunglasses
Episode 4What Lies BeneathAired October 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.
- 44m
- Directed by Larry Shaw
- Written by Barry O'Brien
Guest stars
- Tony Plana Father Arguello
- Lise Simms Wendy Johnson
- Jerry O'Donnell Milton Cicero
- Ryan Devlin Stephen Reed
- Blake Shields Eric Logan
- Casey Sander Billy O'Rourke
- JF Davis Dave Johnson
- Herbert Russell Bob
Episode 5The NoseAired October 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.
- 44m
- Directed by Steve Robin
- Written by Nancy Kiu
Guest stars
- Stephnie Weir Mia Laszlo
- Aubrey Deeker Hernandez Lorenzo
- Kevin Joy Graham Fletcher
- Charles Mesure Liam Hollister
- Chris Caldovino Freddy Stark
- Terrell Tilford Hawthorne Carter
- Ray Proscia Tom Gilliam
- John Nania Justin Fletcher
Episode 6Cool BoysAired November 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.
- 44m
- Directed by Paul Holahan
- Written by Alexi Hawley
Guest stars
- Adam Baldwin Ethan Slaughter
- Kerry Barker Dawn
- Corey Reynolds Mark West
- Brian Gaskill David Lacey
- Brett DelBuono Louis Prince
- Phil Reeves Ronald Booth
- Wade Allain-Marcus Clint
- Al Carabello Brian Trucco
Episode 7The Last SeductionAired November 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.
- 44m
- Directed by John Terlesky
- Written by Rob Hanning
Guest stars
- Sunkrish Bala Vikram Singh
- Lindsay Price Lindsey Trent
- Sheldon Bailey Anton Ford
- Andrea Roth Nancy Underwood
- June Carryl Therapist
- Matthew Jaeger George Keller
- Brynn Thayer Penelope Keller
- Clint Carmichael Brad Washington
Episode 8Mr. & Mrs. CastleAired November 23, 2015
Castle and Beckett investigate the murder of a cruise ship entertainer, only to find themselves trapped at sea with the killer.
- 43m
- Directed by Jeff Bleckner
- Written by Christine Roum
Guest stars
- Sunkrish Bala Vikram Singh
- Kristoffer Polaha Caleb Brown
- Cantrell Harris Officer Ellroy
- Arye Gross Sidney Perlmutter
- Rob Brownstein Captain Ziering
- Adam Korson Isaac Dern
- Dagney Kerr Sarah
- Minni Jo Mazzola Bethany
Episode 9Tone DeathAired February 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.
- 44m
- Directed by Hanelle M. Culpepper
- Written by Robert Bella
Guest stars
- Corbin Bleu Hunter
- Arnell Powell Chris Jackson
- Sonya Eddy Olivia Toussaint
- John Billingsley Harvey Larson
- Mark Famiglietti Scott Weinberg
- Fiona Gubelmann Linda Weinberg
- Jaquita Ta'le Charisse
- Joe Regalbuto Dan O'Grady
Episode 10Witness for the ProsecutionAired February 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.
- 44m
- Directed by Bill Roe
- Written by Terence Paul Winter
Guest stars
- Sunkrish Bala Vikram Singh
- Kristoffer Polaha Caleb Brown
- Clare Grant Nina O'Keefe
- Darlene Vogel Sadie Beakman
- Christopher B. Duncan Marcus Weller
- Denise Dowse Gloria Wollcott
- Tuc Watkins Roger Masters
- Kassie DePaiva Joanna Masters
Episode 11Dead RedAired February 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.
- 44m
- Directed by Jeannot Szwarc
- Written by Jim Adler
Guest stars
- Nikita Bogolyubov Grigory Mishkin
- Endre Hules Pavel Oborin
- Nick E. Tarabay Vasiliy Zhirov
- Boris Lee Krutonog Sergei Mishkin
- Luke Stratte-McClure Jurgen Kass
- Kimleigh Smith Joyce
- Ann Cusack Rita
- Albert Malafronte Frank Thomas / Anatoly Arkady
Episode 12The Blame GameAired February 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.
- 44m
- Directed by Jessica Yu
- Written by Michal Zebede
Guest stars
- Amy Robach Lila Campo
- Kai Lennox Simon
- Kevin Christy Todd
- Cyrus Farmer Judah
- Idara Victor Patty
- Vedette Lim Meadow
- Elena Evangelo Jennifer Perez
- Pamela Dunlap Secretary
Episode 13And Justice for AllAired February 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.
- 44m
- Directed by Kate Woods
- Written by Adam Frost
Guest stars
- Sunkrish Bala Vikram Singh
- David Michael Trevino Eddie Ramirez
- J.D. Walsh John Emerson
- Greg Serano Agent Napier
- Grainger Hines Jason Caldwell
- Karan Oberoi Achmed
- Nondumiso Tembe Aida N'diaye
- Greg Bryan Alistair Gascoyne
Episode 14The G.D.S.Aired March 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.
- 44m
- Directed by John Terlesky
- Written by Alexi Hawley
Guest stars
- Summer Glau Kendall Frost
- Jason Manuel Olazabal Detective Menendez
- Gerald McRaney Mason Wood
- Doug Savant Victor Nigel
- Courtney Ford Courtney
- Darri Ingolfsson Austin Elektra
- Mageina Tovah Veronica Harris
- Ryun Yu Andrew
Episode 15Fidelis Ad MortemAired March 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.
- 44m
- Directed by Rob Bowman
- Written by Chad Gomez Creasey
Guest stars
- Michael Bowen Joseph Ortiz
- James Morrison Commissioner Malone
- Ellen Woglom Rachel Decker
- Wings Hauser Jack Flanagan
- Delon de Metz Dave Chambers
- Christina Grance Jane Lopez
- Andrew Hwang Steve Takata
- Antonio Leon Arthur Stinson
Episode 16HeartbreakerAired April 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.
- 44m
- Directed by Thomas J. Wright
- Written by Barry O'Brien
Guest stars
- Angélica Celaya Sonia Ruiz
- Gonzalo Menendez Ronaldo
- Sebastian Sozzi Joey Montez
- Sandra Thigpen Mrs. Kirby
- Aris Alvarado Tito
- Elena Campbell-Martinez Mama
- Michael Cognata Darren Ives
- Dean Cudworth Michael Kirby
Episode 17Death WishAired April 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.
- 43m
- Directed by Bill Roe
- Written by Stephanie Hicks
Guest stars
- Denise Crosby Marion Baker
- Carolyn Stotesbery Genevieve Sutton
- Erich Wildpret Mike Harlin
- Alexandra Bokyun Chun Miss Cross
- John Ducey Mark Nagle
- T.J. Ramini Khalid Hasheim
- Layla Alizada Phoebe
Episode 18BackstabberAired April 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.
- 44m
- Directed by Jessica Yu
- Written by Robert Bella
Guest stars
- Alan Smyth Steven Mallory
- Aaron McCusker Wesley Connors
- Bree Williamson Karla
- David Hoffman Ned Werner
- Oliver Muirhead Bryce Robert
- Senta Burke Cleaning Lady
- Billy Ray Gallion Marcus Janek
- Michelle Alegria News Anchor
Episode 19Dead AgainAired April 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.
- 44m
- Directed by Bill Roe
- Written by Rob Hanning
Guest stars
- Sunkrish Bala Vikram Singh
- Kristoffer Polaha Caleb Brown
- Jonathan Silverman Alan Masters
- Kate Cobb Gwen Parker
- Brian Scolaro Dave Barton
- Maurice Benard Horatio Spate
- Patrick Labyorteaux Glen Hume
- Raymond Ma Lucky Dragon Owner
Episode 20Much Ado About MurderAired May 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.
- 44m
- Directed by Hanelle M. Culpepper
- Written by Christine Roum
Guest stars
- Jewel Staite Erin Cherloff
- Marco Rodríguez Jorge Zamacona
- Marco Zunino Hector Zamacona
- Gabriel Salvador Alejandro Guzman
- Claudio Pinto Johnny Toro
- Andrew Elvis Miller Jake Cuneo
- Juliana Dever Jenny Duffy-O'Malley
- Michelle Alegria News Anchor
Episode 21Hell to PayAired May 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.
- 44m
- Directed by John Terlesky
- Written by Jim Adler, Nancy Kiu and Adam Frost
Guest stars
- Rick Cosnett Victor Crowne
- Brian Poth Oscar von Eckland
- Anne-Marie Johnson Sondra Kramer
- Michael Chieffo Roth Martin
- Benjamín Benítez Dave Holmby
- Matt Borlenghi Rollins
- Emanuel Loarca Guard
- Ronnie Steadman Gabriel Shaw
Episode 22CrossfireAired May 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.
- 44m
- Directed by Rob Bowman
- Written by Alexi Hawley and Terence Paul Winter
Guest stars
- Sunkrish Bala Vikram Singh
- Kristoffer Polaha Caleb Brown
- Gerald McRaney Mason Wood
- Jed Rees Mr. Flynn
- Michelle Alegria Newscaster
- Paul Haitkin Fake Caleb
- Michael Teh Brett