Mr. & Mrs. Castle
Season 8, Ep. 8
An entertainer on a cruise ship is killed, and Castle and Beckett investigate while trapped on the ship with the murderer.
First Aired: November 23, 2015.
The Last Seduction
Season 8, Ep. 7
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.
First Aired: November 16, 2015.
Season 8, Ep. 6
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.
First Aired: November 9, 2015.
Season 8, Ep. 5
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.
First Aired: October 19. 2015.
What Lies Beneath
Season 8, Ep. 4
A hermit-like author idolized by Castle is killed, and Castle resolves to solve the murder.
First Aired: October 12, 2015.
Season 8, Ep. 3
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.
First Aired: October 5. 2015.
Season 8, Ep. 2
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.
First Aired: September 28, 2015.
Season 8, Ep. 1
Since passing her Captain's exam and the offer to run for State Senate, Beckett and Castle are adjusting to her career change. A call from a mysterious stranger sets off an unpredictable chain of events.
First Aired: September 21, 2015.
FINALE: Hollander's Woods
Season 7, Ep. 23
In the seventh-season finale, a death occurs in the woods and Castle becomes obsessed with the case because it reminds him of a pivotal event in his childhood. Meanwhile, Beckett reaches a turning point in her life.
First Aired: May 11, 2015.
Dead From New York
Season 7, Ep. 22
Castle and Beckett are called in to investigate the death of Sid Ross, the powerful creator of the long-running sketch comedy show "Saturday Night Tonight". As they delve into Sid's life and his show, they discover a shocking secret that may explain his murder.
First Aired: May 4, 2015.
In Plane Sight
Season 7, Ep. 21
On route to London, Castle and Alexis' routine flight turns deadly when the plane's Air Marshal is found murdered. With Beckett's help on the ground, they race to find the killer before he carries out his deadly plan.
First Aired: April 27, 2015.
Season 7, Ep. 20
A recurring dream help Castle and Beckett discern clues about his two month disappearance but their search has deadly consequences.
First Aired: April 20, 2015.
Season 7, Ep. 19
Beckett and Castle face a large list of suspects when a personal injury attorney is murdered.
First Aired: March 30, 2015.
At Close Range
Season 7, Ep. 18
Ryan ends up in the middle of an assassination plot while on the security detail of a congressman.
First Aired: March 25, 2015.
Hong Kong Hustle
Season 7, Ep. 17
A detective from Hong Kong with information on a murder victim teams up with Beckett and Castle.
First Aired: March 16, 2015.
The Wrong Stuff
Season 7, Ep. 16
An astronaut is killed inside a Mars simulation; a discovery results in a shocking turn in the case.
First Aired: February 23, 2015.
Season 7, Ep. 15
Part 2 of 2. Stakes rise as the 12th Precinct matches wits with serial killers Jerry Tyson (3XK) and Dr. Kelly Nieman. Castle and the team must crack the case before the killers claim their next victim.
First Aired: February 16, 2015.
Season 7, Ep. 14
Part 1 of 2. Castle and Beckett encounter an old rival, Dr. Kelly Nieman, while looking at clues in a woman's mysterious murder, and then further investigation links an infamous serial killer to the crime.
First Aired: February 9, 2015.
Season 7, Ep. 13
A woman hires Castle to see if her husband is cheating on her -- but things take a shocking turn.
First Aired: Feburary 02, 2015
Private Eye Caramba!
Season 7, Ep. 12
While Beckett and her team investigate the murder of a young telenovela actress, Castle is hired by the show's star to follow the case from a different angle.
First Aired: January 19, 2015.
Season 7, Ep. 11
When Castle is prohibited from working with Beckett or the 12th Precinct he gets his P.I. license and shows up at Beckett's crime scene as a private investigator, where things don't go as planned.
First Aired: January 12, 2015.
Season 7, Ep. 10
Castle and Beckett's investigation into the shooting death of an ER physician leads them to a Mafia family run by an old friend of Castle's. Esposito and Lanie reach a defining moment in their relationship.
First Aired: December 8, 2014.
Last Action Hero
Season 7, Ep. 9
A well-known action-movie star from the 1980s is killed, so Castle and Becket look into the actor's past and get some investigative assistance from his aging former costars.
First Aired: December 1, 2014
Season 7, Ep. 8
Subway riders are taken hostage by a man with a gun, and Esposito is one of the unlucky passengers.
First Aired: November 24, 2014
Once Upon a Time in the West
Season 7, Ep. 7
Castle and Beckett pose as newlyweds at an Old West resort to investigate a possible poisoning homicide.
First Aired: November 17, 2014