Watch Castle Season 3 Episode 18 online via TV Fanatic with over 7 options to watch the Castle S3E18 full episode. Affiliates with free and paid streaming include Amazon, iTunes, Vudu, YouTube Purchase, Google Play, TNT, and Verizon On Demand.
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Castle takes on the world of soap operas this week. A number of stars from actual daytime dramas stop by for cameos.