Castle: Watch Season 6 Episode 21 Online

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The murder of an extreme sports skateboarder Logan Moore, took Castle and Beckett back to a six year old cold case where a 12 year old boy had been killed. Turned out that these up and coming athletes had killed one of their own as kids, but Logan tried to find the video and catch the killer in Castle Season 6 Episode 21.

Unfortunately, it got him killed.

Meanwhile Ryan and Esposito vied to be Castle's best man, only to find out that the honor had already gone to Alexis.

And Castle had to face a crushing defeat as Kate Beckett took over as the reigning Scrabble champion at the Castle loft.

If once a week isn't nearly enough, you can watch Castle online any time here at TV Fanatic.

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

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Castle Season 6 Episode 21 Quotes

All he knows is that sometime between 3 and 4 it was Death Race 2000 out here.

Esposito

Richard Castle, one word short. I cannot allow this to be my epitaph.

Castle