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The Best Episodes of Castle

Every episode of Castle ranked from best to worst. Let's dive into the Best Episodes of Castle!

Binge this in 5d 6h•Peaking at 9.3/10

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 to tag along with an NYPD homicide investigation team for

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Episode Rankings

  1. #1 Fan Favorite
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    Castle Season 4 Episode 23 - Always
    9.3/10(3209 votes)

    S4:E23

    When the murder of an Army veteran puts Beckett on the trail of the man who shot her, Castle must decide how much he's willing to sacrifice to keep her safe. As secrets are revealed and feelings are put on the table, the lives of the detectives at the 12th Precinct may never be the same.

    Director:Rob Bowman
    Writers:Terri Edda Miller, Andrew W. Marlowe

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  2. Castle Season 5 Episode 16 - Hunt (2)
    9.3/10(2705 votes)

    S5:E16

    In the powerful conclusion of a two-episode story arc, when the FBI fails to get his daughter back, Castle takes matters into his own hands, reaching out to a shadowy fixer to help him recover Alexis. But Castle soon learns that his daughter's kidnapping may be part of an even more sinister agenda.

    Director:Rob Bowman
    Writer:Andrew W. Marlowe

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  3. Castle Season 3 Episode 24 - Knockout
    9.2/10(2579 votes)

    S3:E24

    Kate Beckett's investigation into her mother's death is reactivated when Hal Lockwood - a professional hitman with knowledge of Beckett's mother's murder - stages a spectacular escape during a court hearing. As police launch a manhunt for Lockwood, Castle and the team uncover evidence of a deeper conspiracy involving a mysterious figure with law enforcement connections who is linked to both Lockwood's escape and the killing of Johanna Beckett. The search for Lockwood and the quest to identify his co-conspirator leads to a shocking and deadly conclusion.

    Director:Rob Bowman
    Writer:Will Beall

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  4. Castle Season 5 Episode 5 - Probable Cause
    9.1/10(2341 votes)

    S5:E5

    While investigating a shocking ritualistic murder, Beckett and her team uncover surprising evidence linking Castle to the killing. As the evidence against him mounts, loyalties are tested. And when surprising revelations come to light, Beckett begins to wonder how well she really knows her new lover and partner of four years

    Director:John Terlesky
    Writer:Andrew W. Marlowe

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  5. Castle Season 5 Episode 15 - Target (1)
    9.1/10(2273 votes)

    S5:E15

    In the first of a two-episode story arc, Castle and Beckett begin a murder investigation that also exposes a plot to kidnap the daughter of a wealthy Middle Eastern businessman. FBI Agent Harris, an even-keeled professional is brought in to help find the kidnappers.

    Director:Bill Roe
    Writer:David Amann

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  6. Castle Season 5 Episode 19 - The Lives of Others
    9.1/10(2327 votes)

    S5:E19

    In the show’s 100th episode, Castle finds himself in the unfortunate position of NOT being able to work a case. While he’s holed up in the loft with a broken leg, Beckett goes off to investigate the death of an IRS agent without him, leaving Castle miserable and bored. But when he thinks he witnesses the murder of a young woman in the apartment across the street, he is thrown into a "Rear Window"-esque murder mystery that hits much too close to home.

    Director:Larry Shaw
    Writers:Terri Edda Miller, Andrew W. Marlowe

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    The 20 WORST Episodes of Castle

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  7. Castle Season 7 Episode 15 - Reckoning (2)
    9.1/10(1944 votes)

    S7:E15

    Stakes rise as the 12th Precinct matches wits with serial killers Jerry Tyson (3XK) and Dr. Kelly Nieman. With the clock ticking, Castle and the team must crack the case before the killers claim their next victim.

    Director:Unknown
    Writer:Unknown

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  8. Castle Season 2 Episode 17 - Tick, Tick, Tick... (1)
    9.0/10(2242 votes)

    S2:E17

    Federal Agent Jordan Shaw, an insightful and accomplished Federal investigator teams up with Castle & Beckett to hunt down a cunning and elusive serial killer.

    Director:Bryan Spicer
    Writer:Moira Kirland

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  9. Castle Season 3 Episode 13 - Knockdown
    9.0/10(2176 votes)

    S3:E13

    When the detective who investigated Beckett's mother's murder is shot before Beckett's eyes before he can give her new evidence in the case, Beckett's old wounds are reopened. The investigation of the detective's death leads the team to an old scheme which may provide the answer to why Beckett's mother was murdered and who ordered it. Beckett and Castle's relationship takes a new turn.

    Director:Thomas J. Wright
    Writer:Will Beall

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  10. Castle Season 4 Episode 7 - Cops & Robbers
    9.0/10(2144 votes)

    S4:E7

    A crew of bank robbers disguised as classic television doctors take hostages which include Castle and Martha. But things are complicated by the fact that Beckett's on the outside having her every move scrutinized by a hostage negotiator and Castle's on the inside with information that the hostages are just a distraction for a more ominous plan.

    Director:Bryan Spicer
    Writer:Terence Paul Winter

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  11. Castle Season 5 Episode 1 - After the Storm
    9.0/10(2444 votes)

    S5:E1

    Picking up the morning after, Castle and Beckett now have to decide if they're a couple or was it just a onetime deal. But before they can tackle that, they must deal with those responsible for Kate's mother's death who are now a threat to Beckett.

    Director:Rob Bowman
    Writer:David Amann

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  12. Castle Season 6 Episode 22 - Veritas
    9.0/10(1873 votes)

    S6:E22

    A secret investigation conducted by Beckett related to her mother's murder goes awry when a man she has been surveilling is killed. When evidence links Beckett to the victim, she and Castle become the targets of a manhunt that puts both of them in grave danger.

    Director:Rob Bowman
    Writers:Rob Hanning, Terence Paul Winter

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  13. Castle Season 2 Episode 18 - Boom! (2)
    8.9/10(2100 votes)

    S2:E18

    In the second part of the story begun in "Tick, Tick, Tick," the serial killer remains at large and is taunting Castle, Beckett and Jordan Shaw to catch him

    Director:John Terlesky
    Writer:Elizabeth Davis Beall

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  14. Castle Season 7 Episode 14 - Resurrection (1)
    8.9/10(1795 votes)

    S7:E14

    When clues in a murder implicate Castle and Beckett's nemesis, Dr. Kelly Nieman, Castle is called in to consult on the case.

    Director:Bill Roe
    Writer:David Amann

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  15. Castle Season 3 Episode 17 - Countdown (2)
    8.8/10(1919 votes)

    S3:E17

    With time running out, Castle and Beckett must put aside their differences with Agent Fallon to avert a city-wide catastrophe.

    Director:Bill Roe
    Writer:Andrew W. Marlowe

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  16. Castle Season 4 Episode 14 - The Blue Butterfly
    8.8/10(2438 votes)

    S4:E14

    When Castle and Beckett investigate the killing of a treasure hunter, they discover the case is linked to a mysterious homicide from 1947 involving a hard-boiled private detective. Castle realizes the only way to solve the present-day murder is to solve the murder from the past. The 1947 case comes to life through stylized flashbacks, featuring Castle as the private eye and Beckett as a femme fatale.

    Director:Chuck Bowman
    Writer:Terence Paul Winter

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  17. Castle Season 5 Episode 4 - Murder, He Wrote
    8.8/10(1981 votes)

    S5:E4

    Castle and Beckett’s plans for a romantic weekend in the Hamptons are interrupted when a dying man stumbles into Castle’s backyard, collapsing into his pool. Unable to escape the lure of the investigation they join up with the small town’s well-intentioned, but inexperienced sheriff to find the killer,

    Director:Rob Bowman
    Writer:David Grae

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  18. Castle Season 6 Episode 5 - Time Will Tell
    8.8/10(2040 votes)

    S6:E5

    A grisly murder investigation leads Castle and Beckett to a suspect who claims he's traveled back in time to stop terrible events from unfolding, events that will change the course of human history. Is he simply a deluded killer, or is it possible that he's telling the truth?

    Director:Rob Bowman
    Writers:Terri Edda Miller, Andrew W. Marlowe

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  19. Castle Season 6 Episode 9 - Disciple
    8.8/10(1846 votes)

    S6:E9

    Castle and Beckett arrive at a crime scene to discover that the female victim bears a shocking resemblance to Medical Examiner Lanie Parish. As the team tries to make sense of this mystery, they realize the killer may be targeting detectives of the 12th Precinct. Dr. Kelly Nieman, an exclusive Manhattan cosmetic surgeon who draws Castle and Beckett's interest because of her connection to the victim.

    Director:Rob Bowman
    Writer:David Amann

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  20. Castle Season 2 Episode 13 - Sucker Punch
    8.7/10(1974 votes)

    S2:E13

    While investigating the death of an Irish mobster, Beckett and Castle uncover a local turf war that may be connected to both a late-night infomercial guru and an international drug smuggling operation. But the case turns agonizingly personal when evidence emerges that the killer they're chasing may have had a hand in Beckett's mother's murder.

    Director:Thomas J. Wright
    Writer:Will Beall

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  21. Castle Season 3 Episode 6 - 3XK
    8.7/10(1846 votes)

    S3:E6

    When a beautiful woman is found dead in an alley, all clues point to her being a victim of the notorious Triple Killer. The Triple Killer, or 3XK, terrorized New York City four years ago, then mysteriously disappeared. Now he's back. In a deadly battle of wits, Castle and Beckett race against time to stop 3XK before he claims his next victims.

    Director:Bill Roe
    Writer:David Amann

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  22. Castle Season 3 Episode 11 - Nikki Heat
    8.7/10(2074 votes)

    S3:E11

    When Castle's novel ''Heat Wave'' becomes a movie, actress Natalie Rhodes accepts Beckett's invitation to visit and learn about the character she will play; Natalie observes Castle and Beckett's investigation of the murder of a matchmaker.

    Director:Jeff Bleckner
    Writer:David Grae

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  23. Castle Season 3 Episode 16 - Setup (1)
    8.6/10(1794 votes)

    S3:E16

    Castle and Beckett investigate the apparent robbery-homicide of a New York cab driver, only to discover that the victim was involved in a mysterious conspiracy with unimaginable consequences. As the stakes continue to rise, hard-charging federal agent Mark Fallon takes over the investigation. Together, Fallon, Beckett and Castle must race to unmask the truth about the victim before it's too late.

    Director:Rob Bowman
    Writer:David Amann

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  24. Castle Season 4 Episode 10 - Cuffed
    8.6/10(1875 votes)

    S4:E10

    When Castle and Beckett wake up in bed, handcuffed together, in a locked room with no memory of how they got there, they must piece together the mystery of where they are and why, all while trying to escape. But as the two of them adjust to being shackled together, what's the biggest threat they face... the people who abducted them or each other? Meanwhile, Ryan, Esposito and Gates are left to investigate their disappearance in a case where all is not what it seems.

    Director:John Terlesky
    Writers:Terri Edda Miller, Andrew W. Marlowe

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  25. Castle Season 4 Episode 15 - Pandora (1)
    8.6/10(1891 votes)

    S4:E15

    Castle and Beckett pursue a ruthless killer who, they discover, is part of a sinister, international conspiracy. Castle and Beckett are joined on the case by Sophia Turner, a smart, sexy CIA operative who has a complicated past with Castle.

    Director:Bryan Spicer
    Writer:David Amann

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Best Episodes Summary

"Always" is the best rated episode of "Castle". It scored 9.3/10 based on 3209 votes. Directed by Rob Bowman and written by Terri Edda Miller, Andrew W. Marlowe, it aired on 5/7/2012. This episode scored 0.0 points higher than the second highest rated, "Hunt (2)".