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Watch Castle Season 6 Episode 18 online to see Rick deal with... ninja?!?

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Watch Castle Season 6 Episode 18 online at TV Fanatic and learn why Rick and Kate think they are battling ninjas.

Episode Details

When Castle and Beckett investigate the murder of a Japanese ballet dancer, they realize that she may have be killed by a ninja, an now they're after Castle.

Rating: 4.1 / 5.0 (117 Votes)
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