Watch Castle Online: Season 8 Episode 21

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When an ax wielding psychopath breaks out of a mental hospital to get to the P.I. office, is Rick Castle marked for death?

Or was he really after the anti-Christ in Castle Season 8 Episode 21?

The Antichrist - Castle

Yes, these were the kinds of questions this installment forced us to ask.

When a secret vault revealed religious clues, were Castle and the team at the 12th be able to solve the case before the end of day?

To find out, watch Castle online here at TV Fanatic. Just use the video above. It's fast, efficient and oh so very easy to do so.

C. Orlando is a TV Fanatic Staff Writer. Follow her on Twitter.

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Castle Season 8 Episode 21 Quotes

You know as well as I do that when the lights go out, bad things happen.


Well I will be sure to cross reference Shaw's visitor against the list of fallen angels.