Season 4, Ep 6, Aired 10/24/11
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  • Episode Description
  • While doing some investigative work at a New York mansion, a prominent ghost hunter is murdered. Castle and Beckett must figure out if paranormal activities are to blame.

  • Cast & Crew
  • Penny Johnson Jerald

    Captain Victoria Gates

  • Nathan Fillion

    Richard Castle

  • Stana Katic

    Det. Kate Beckett

  • Molly Quinn

    Alexis Castle

  • Susan Sullivan

    Martha Rodgers

  • Photos (5)
  • Fan Reviews (2)
  • Demons

    By thefanof, Oct 28, 2011

  • Another OK episode, writers where are you??

    By Beckett, Oct 25, 2011

  • Trivia & Quotes
  • Quotes (6)

    • Castle: Listen if you're not scared, just say it?
      Beckett: No.
      Castle: Come on, you know you want to.
      Beckett: I don't want to say it Castle.
      Castle: For me please.
      Beckett: I ain't afraid of no ghosts!

    • Castle: (to Alexis) I can promise you this. If two people believe in something, really believe, anything, even the impossible, is possible.

    • Beckett: Why are you so determined to find the supernatural in all this?
      Castle: Why are you so determined not to?
      Beckett: You know what? I am just following the evidence wherever it may lead, and as a cop, I'm going to consider every possible worldly explanation.
      Castle: And what if there is none?
      Beckett: Well, then I'm open to the alternatives.
      Castle: (laughs) You? Skepticus Maximus?

    • Beckett: So what's our next step? Are we gonna stake out the house, wait for the demon to show up, zap him with our proton pack?
      Castle: That's not a real thing, you know, that real ghost hunters use.
      Esposito: Real ghost hunters? Isn't that a contradiction in terms, bro?

    • Castle: So... if Barry's not our guy, I think it's time we revisit the possibility that our killer's a...
      Beckett: If you say ghost, I'm sending you home.
      Castle: Apparition-American.

    Show More Quotes

    Notes (4)

    • International Episode Titles:
      Czech Republic: Démoni (Demons)

    • Featured Music:
      "Ghostbusters" by Ray Parker Jr.

    • Although credited, Penny Johnson Jerald (Captain Gates) did not appear in this episode.

    • Original International Air Dates:
      Canada: October 24, 2011 on CTV
      Australia: February 28, 2012 on Channel 7
      United Kingdom: April 11, 2012 on Alibi
      Germany: April 13, 2012 on Kabel 1
      Czech Republic: October 10, 2012 on Prima family
      Slovakia: April 10, 2013 on JOJ

    Trivia (1)

    • About at minute 8:35 into the episode you can see a police officer delivering papers to Det. Esposito. The officer is played by Josh Hopkins.

    Allusions (2)

    • Beckett: Maybe Shaggy will keep Scooby out of trouble.

      Kate is referring to the famous mystery-solving Scooby-Doo cartoon series that still airs today. The show first aired on CBS in 1969. Scooby-Doo is a talking Great Dane and Shaggy is Norville "Shaggy" Rogers, his owner.

    • Beckett: (to Castle) I ain't afraid of no ghosts.
      An allusion to the lyrics of the theme song for Ghostbusters.

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