Watch Castle Season 8 Episode 21 - Hell to Pay

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Castle Season 8 Episode 21
A psychiatric prisoner escapes and falls dead in Castle's PI office, and the examination that follows has Castle surmising the Antichrist could take a part.
First Aired: May 9, 2016 - 42 Minutes Runtime
Nathan Fillion, Stana Katic, Susan Sullivan, Jon Huertas, Rick Cosnett

Watch Castle - Hell to Pay (s8 e21) Online - Watch online anytime: Buy, Rent

Castle, Season 8 Episode 21, is available to watch and stream on ABC. You can also buy, rent Castle on demand at Amazon, Vudu, FandangoNow, Google Play, iTunes online.