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Castle Season 8 Episodes

22 Episodes 2015 - 2016

As the eighth and final season of this crime drama unfolds, Beckett (Stana Katic) becomes the captain of her precinct, and shortly afterward she goes missing. Castle (Nathan Fillion) and Alexis (Molly Quinn) enlist a British PI named Hayley Shipton (Toks Olagundoye) to assist the cops in searching for Beckett. Though she's eventually found, this isn't the last time someone disappears--both Beckett and Castle are abducted while on a murder case and forced to play mind games with their captors; and later Castle is kidnapped by a drug cartel and is asked to write a screenplay. Castle also gets to try his hand at acting when he goes undercover as a student, and Alexis gets the same opportunity on a different case. And throughout the season, Beckett looks for clues to an ongoing LokSat case she's determined to solve.

Episode 1

XY

Mon, Sep 21, 2015 45 mins

In Part 1 of the two-part eighth-season opener, Castle searches for a missing Beckett following a call from a mysterious stranger.

Where to Watch
Castle, Season 8 Episode 1 image

Episode 2

XX

Mon, Sep 28, 2015 45 mins

In the conclusion of the eighth-season opener, Beckett's disappearance is examined from her angle as she fights to stay alive and uncover who wants to see her demise.

Where to Watch
Castle, Season 8 Episode 2 image

Episode 3

PhDead

Mon, Oct 5, 2015 59 mins

Castle goes undercover as a professor after a college fraternity student is killed in a grisly manner. During the investigation, he and Beckett unearth some sinister secrets the university wants to keep suppressed.

Where to Watch
Castle, Season 8 Episode 3 image

Episode 4

What Lies Beneath

Mon, Oct 12, 2015 60 mins

A hermit-like author idolized by Castle is killed, and Castle resolves to solve the murder.

Where to Watch
Castle, Season 8 Episode 4 image

Episode 5

The Nose

Mon, Oct 19, 2015 59 mins

An art thief steals a rare painting and kills the person transporting it, so Castle and Beckett team up with the key witness in order to find the culprit.

Where to Watch
Castle, Season 8 Episode 5 image

Episode 6

Cool Boys

Mon, Nov 9, 2015 59 mins

Det. Slaughter returns seeking Castle's help in a robbery case. However, Slaughter becomes a suspect when the heist case turns into a murder case, and Castle's unsure about whether his pal is innocent or guilty.

Where to Watch
Castle, Season 8 Episode 6 image

Episode 7

The Last Seduction

Mon, Nov 16, 2015 60 mins

A seductive con man is killed, and the investigation has Castle and Beckett questioning New York City's upper crust. Meanwhile, Castle has a surprise in store for his and Beckett's one-year anniversary as husband and wife.

Where to Watch
Castle, Season 8 Episode 7 image

Episode 8

Mr. & Mrs. Castle

Mon, Nov 23, 2015 59 mins

An entertainer on a cruise ship is killed, and Castle and Beckett investigate while trapped on the ship with the murderer.

Where to Watch
Castle, Season 8 Episode 8 image

Episode 9

Tone Death

Mon, Feb 8, 2016 59 mins

A body is found in a theater where Martha is working, so Castle and Beckett investigate and are surprised to learn how cutthroat a cappella singers can be.

Where to Watch
Castle, Season 8 Episode 9 image

Episode 10

Witness for the Prosecution

Sun, Feb 14, 2016 60 mins

Castle takes the stand as the key witness in a murder trial, but then new info emerges late in the case, leading him and Beckett to rush to prevent a miscarriage of justice.

Where to Watch
Castle, Season 8 Episode 10 image

Episode 11

Dead Red

Mon, Feb 15, 2016 59 mins

A Russian diplomat's son is killed, leading Castle and Beckett to learn about international crime and foreign politics as Castle is tasked with keeping a Russian security officer busy.

Where to Watch
Castle, Season 8 Episode 11 image

Episode 12

The Blame Game

Mon, Feb 22, 2016 59 mins

Castle gets abducted and must solve puzzles and mind games with a group of strangers. Meanwhile, Beckett and her colleagues race against the clock to find Castle and capture a killer.

Where to Watch
Castle, Season 8 Episode 12 image

Episode 13

And Justice for All

Mon, Feb 29, 2016 59 mins

A student learning to speak English is killed and his classmates keep mum when questioned by police, so Castle goes undercover to gain info on the victim by enrolling in the class as a French Canadian immigrant.

Where to Watch
Castle, Season 8 Episode 13 image

Episode 14

G.D.S.

Mon, Mar 7, 2016 61 mins

Castle returns to Los Angeles in search of info about the missing time related to his abduction, and while he's there, the Greatest Detective Society reaches out to him and asks for his assistance in solving a murder.

Where to Watch
Castle, Season 8 Episode 14 image

Episode 15

Fidelis Ad Mortem

Mon, Mar 21, 2016 59 mins

The team head to the NYPD Academy for an investigation involving a murdered recruit. Meanwhile, Castle grapples with a decision with far-reaching ramifications for himself and Beckett.

Where to Watch
Castle, Season 8 Episode 15 image

Episode 16

Heartbreaker

Mon, Apr 4, 2016 59 mins

One of Esposito's old cases is reexamined by Castle and Beckett because of a clue left at a crime scene involving an armored-car driver's murder.

Where to Watch
Castle, Season 8 Episode 16 image

Episode 17

Death Wish

Mon, Apr 11, 2016 59 mins

Castle and Beckett embark on a search for Aladdin's lamp after a man linked to smuggling Turkish antiques is killed.

Where to Watch
Castle, Season 8 Episode 17 image

Episode 18

Backstabber

Mon, Apr 18, 2016 59 mins

Hayley helps an old friend, but this favour gets her in trouble, linking her to a murder and a cyber-terror attack. She then needs help herself, so Castle and Beckett attempt to clear her name.

Where to Watch
Castle, Season 8 Episode 18 image

Episode 19

Dead Again

Mon, Apr 25, 2016 59 mins

A city inspector cheats death twice when he survives separate poisoning attempts, and a curious Castle and Beckett grow determined to solve this mysterious case.

Where to Watch
Castle, Season 8 Episode 19 image

Episode 20

Much Ado About Murder

Mon, May 2, 2016 59 mins

A movie star who transitioned to theater work is killed, so Castle and Becket go behind the scenes to investigate what was going on in the actor's life.

Where to Watch
Castle, Season 8 Episode 20 image

Episode 21

Hell to Pay

Mon, May 9, 2016 59 mins

A psychiatric inmate escapes and drops dead in Castle's PI office, and the investigation that follows has Castle surmising the Antichrist could be involved.

Where to Watch
Castle, Season 8 Episode 21 image

Episode 22

Crossfire

Mon, May 16, 2016 59 mins

In the series finale, lives are endangered unexpectedly when Castle and Beckett prepare to take on LokSat.

Where to Watch
Castle, Season 8 Episode 22 image