Mondays 10:00 PM on ABC
Watch Castle Season 4 Episode 6 online via TV Fanatic with over 2 options to watch the Castle S4E6 full episode. Affiliates with free and paid streaming include Amazon and iTunes.

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Episode Details

Castle Season 4 Episode 6: "Demons"

Castle and Beckett hunt down the murder of a famous ghost hunter on the latest installment of Castle.

Castle Season 4 Episode 6 Quotes

If you say ghost, I'm sending you home.


Alexis: Dad, are you using me as a shield against flesh eating zombies?
Castle: No, I'm just trying to give you a better view.