Mondays 10:00 PM on ABC
Castle
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Looking to watch Castle Season 5 Episode 21 online? TV Fanatic is your destination for every paid and free streaming option of the Castle S5E21 full episode from 2 affiliates.

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Episode Details

Castle Season 5 Episode 21: "The Squab and the Quail"

Beckett is assigned to protect a billionaire on this episode of Castle, which prompts her to reflect on her relationship.