Watch Castle Season 8 Episode 8 online via TV Fanatic with over 6 options to watch the Castle S8E8 full episode. Affiliates with free and paid streaming include Amazon, iTunes, Vudu, YouTube Purchase, Google Play, and Verizon On Demand.
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On Castle Season 8 Episode 8, Castle and Beckett end up trapped at sea on a ship with a killer when they investigate a cruise ship entertainer's murder.