Mondays 10:00 PM on ABC
Looking to watch Castle Season 4 Episode 22 online? TV Fanatic is your destination for every paid and free streaming option of the Castle S4E22 full episode from 2 affiliates.

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Episode Details

Castle Season 4 Episode 22: "Undead Again"

A zombie attack on Castle?!? That's the theory that starts to fly on this season four episode.

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