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The Best Episodes of Castle Season 6

Every episode of Castle Season 6 ranked from best to worst. Discover the Best Episodes of Castle Season 6!

Binge this in 16h 51m•Peaking at 9.1/10

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
    Castle Season 6 Episode 1 - Valkyrie (1)
    8.3/10(1812 votes)

    #1 - Valkyrie (1)

    S6:E1

    Last season ended with Beckett wrestling over whether to take a high-profile job in DC -- a dilemma made more complicated when Castle proposed to her. In the Season 6 Premiere of "Castle," Castle and Beckett will deal with the consequences of their decisions against the backdrop of a high-stakes investigation.

    Director:John Terlesky
    Writer:Rob Hanning

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  2. Castle Season 6 Episode 2 - Dreamworld (2)
    7.9/10(1483 votes)

    #2 - Dreamworld (2)

    S6:E2

    Continuing from the season premiere episode, Beckett races against time to find a stolen toxin capable of killing tens of thousands of people. To make matters worse, Castle was exposed, leaving him with less than 24 hours to live.

    Director:Thomas J. Wright
    Writer:David Grae

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  3. Castle Season 6 Episode 3 - Need to Know
    7.7/10(1387 votes)

    #3 - Need to Know

    S6:E3

    With Beckett still in D.C., Castle and the boys investigate the murder of former child star Charlie Reynolds, who rose to fame playing the lovable nerd on an early 90s High School sitcom. But the case takes a turn for the strange when Agents Beckett and McCord arrive from Washington to take over the investigation, creating competitive tension in the precinct. But why would a washed-up actor's death warrant Federal scrutiny? Whatever the reason, Beckett and McCord aren't telling. Meanwhile, Castle has to contend with a new face at the 12th, NYPD Detective Frank "Sully" Sullivan.

    Director:Larry Shaw
    Writer:Elizabeth Davis Beall

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  4. Castle Season 6 Episode 4 - Number One Fan
    8.3/10(1449 votes)

    #4 - Number One Fan

    S6:E4

    A desperate young murder suspect, Emma Briggs, takes hostages at gunpoint then mysteriously insists that she will only negotiate with one person: Richard Castle.

    Director:John Terlesky
    Writer:Terence Paul Winter

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  5. Castle Season 6 Episode 5 - Time Will Tell
    8.8/10(1952 votes)

    #5 - Time Will Tell

    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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  6. Castle Season 6 Episode 6 - Get a Clue
    7.8/10(1328 votes)

    #6 - Get a Clue

    S6:E6

    As Castle and Beckett investigate the ritualistic murder of a young woman, they find strange symbols in the victim's apartment; Castle struggles with Alexis' decision to move in with Pi.

    Director:Holly Dale
    Writer:Christine Roum

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  7. Castle Season 6 Episode 7 - Like Father, Like Daughter
    8.3/10(1481 votes)

    #7 - Like Father, Like Daughter

    S6:E7

    Alexis enlists Castle’s help on an Innocence Review case to prove that a death row inmate, Frank Henson, was wrongly convicted. With only 72 hours left before his execution, Castle and Alexis (with help from Beckett) urgently investigate the original murder, only to uncover explosive secrets that may seal Frank’s fate.

    Director:Paul Holahan
    Writer:Marc Dube

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  8. Castle Season 6 Episode 8 - A Murder Is Forever
    7.5/10(1268 votes)

    #8 - A Murder Is Forever

    S6:E8

    When a famed relationship therapist is murdered, it appears that her access to the secrets of her elite and powerful clients led to her death. But when Castle and Beckett discover the victim was in possession of a rare object worth millions of dollars, they realize that this case may be even more complicated – and dangerous – than they thought.

    Director:Bill Roe
    Writers:Chad Gomez Creasey, Dara Resnik

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  9. Castle Season 6 Episode 9 - Disciple
    8.9/10(1761 votes)

    #9 - Disciple

    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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  10. Castle Season 6 Episode 10 - The Good, The Bad & The Baby
    8.2/10(1372 votes)

    #10 - The Good, The Bad & The Baby

    S6:E10

    Before dying, he hands a mysterious bundle to the priest. When the bundle turns out to be a smiling baby boy, Castle and Beckett find themselves accidental nannies to the newborn. But when they determine the baby and the victim were not related, they discover that finding his rightful parents may be just as hard as solving the murder.

    Director:John Terlesky
    Writer:Terri Edda Miller

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  11. Castle Season 6 Episode 11 - Under Fire
    8.6/10(1667 votes)

    #11 - Under Fire

    S6:E11

    When Castle and Beckett discover that the victim of a building fire was actually shot to death, they get on the trail of a serial arsonist turned murderer. Meanwhile, Ryan's wife, Jenny, goes into labor, but disaster threatens to ruin the joyous moment.

    Director:Paul Holahan
    Writers:David Amann, Andrew W. Marlowe

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  12. Castle Season 6 Episode 12 - Deep Cover
    8.4/10(1358 votes)

    #12 - Deep Cover

    S6:E12

    The murder of a young record store clerk takes a strange turn when the team discovers his past history as a high-level hacker. But it's nothing compared to the shock Castle receives when their investigation leads them straight to his father, Jackson Hunt.

    Director:Thomas J. Wright
    Writer:Terence Paul Winter

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  13. Castle Season 6 Episode 13 - Limelight
    7.9/10(1252 votes)

    #13 - Limelight

    S6:E13

    When a pop star is found dead in an alley, Beckett and Castle look into her hard-partying lifestyle; a shocking revelation rocks the investigation.

    Director:Bill Roe
    Writer:Rob Hanning

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  14. Castle Season 6 Episode 14 - Dressed To Kill
    7.8/10(1215 votes)

    #14 - Dressed To Kill

    S6:E14

    When the assistant to Modern Fashion Magazine’s dictatorial editor Matilda King is found murdered, Castle and Beckett are thrust into the glitzy, ruthless world of high fashion in their search for the killer. Meanwhile Beckett’s history in the modelling world gets her access to a very special wedding surprise.

    Director:Jeannot Szwarc
    Writer:Elizabeth Davis Beall

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  15. Castle Season 6 Episode 15 - Smells Like Teen Spirit
    8.1/10(1293 votes)

    #15 - Smells Like Teen Spirit

    S6:E15

    The murder of a high school mean girl draws Castle back to one of his many alma maters, where he is giddy to learn that the evidence points to a surprising perpetrator - a teenage telekinetic, throwing he and Beckett into a real-life "Carrie."

    Director:Kevin Hooks
    Writers:Chad Gomez Creasey, Dara Resnik

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  16. Castle Season 6 Episode 16 - Room 147
    8.1/10(1226 votes)

    #16 - Room 147

    S6:E16

    When a guilt-ridden young woman confesses to the murder of a struggling actor -- knowing details only the killer could know -- Beckett and Castle seem to have an open-and-shut case, until they uncover proof that their suspect couldn’t possibly be the killer. When a second person confesses, equally convinced they committed the murder, the team realizes the case is far more mysterious than they thought.

    Director:Bill Roe
    Writer:Adam Frost

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  17. Castle Season 6 Episode 17 - In the Belly of the Beast
    8.6/10(1493 votes)

    #17 - In the Belly of the Beast

    S6:E17

    Beckett is recruited to assist on a Narcotics investigation, but a routine mission turns deadly when an undercover operation goes awry. To survive, Beckett must engage in a battle of wits against some of the most dangerous men in the New York underworld – including a powerful enemy from her past.

    Director:Rob Bowman
    Writers:David Amann, Andrew W. Marlowe

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  18. Castle Season 6 Episode 18 - The Way of the Ninja
    8.1/10(1211 votes)

    #18 - The Way of the Ninja

    S6:E18

    When a Japanese ballet dancer is mysteriously murdered, Castle and Beckett's investigation into her secret life uncovers evidence that she was killed by a ninja, and now that ninja is coming after them.

    Director:Larry Shaw
    Writer:Unknown

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  19. Castle Season 6 Episode 19 - The Greater Good
    7.7/10(1103 votes)

    #19 - The Greater Good

    S6:E19

    Castle and Beckett investigate the murder of a Wall Street trader, but the case takes a shocking turn when the they discover the victim was an undercover informant for the U.S. Attorney’s office. To complicate matters further, the U.S. attorney involved is Elizabeth Weston, Captain Gates’ estranged sister.

    Director:Holly Dale
    Writer:David Grae

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  20. Castle Season 6 Episode 20 - That '70s Show
    8.2/10(1425 votes)

    #20 - That '70s Show

    S6:E20

    When construction workers find the body of an infamous New York mobster who disappeared in the seventies, Beckett and Castle try to solve this three decade-old mob hit. Unfortunately, their only witness is a man who thinks it’s still the 1970’s, so to uncover what he knows, they must play into his delusion, and party like it’s the last days of disco.

    Director:John Terlesky
    Writer:David Amann

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  21. Castle Season 6 Episode 21 - Law & Boarder
    7.3/10(1100 votes)

    #21 - Law & Boarder

    S6:E21

    Castle and Beckett delve into the world of extreme sports when a mysterious motorcyclist shoots an up-and-coming professional skateboarder.

    Director:Thomas J. Wright
    Writer:Jim Adler

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  22. Castle Season 6 Episode 22 - Veritas
    9.1/10(1786 votes)

    #22 - Veritas

    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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  23. Castle Season 6 Episode 23 - For Better or Worse
    7.7/10(1496 votes)

    #23 - For Better or Worse

    S6:E23

    Castle and Beckett's long-awaited wedding is almost here, but when a shocking surprise threatens to ruin the big day, they are sent on a wild mission filled with masked men, angry bikers and a charming ne'er-do-well from Beckett's past.

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

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Season 6 Ratings Summary

"Valkyrie (1)" is the best rated episode of "Castle" season 6. It scored 8.3/10 based on 1812 votes. Directed by John Terlesky and written by Rob Hanning, it aired on 9/23/2013. This episode is rated 0.4 points higher than the second-best, "Dreamworld (2)".