Mondays 10:00 PM on ABC
Watch Castle Season 5 Episode 23 online via TV Fanatic with over 2 options to watch the Castle S5E23 full episode. Affiliates with free and paid streaming include Amazon and iTunes.

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Episode Details

Castle Season 5 Episode 23: "The Human Factor"

Why are federal agents trying to take over a case? That's the question on Castle this week.