Watch Castle Season 3 Episode 15 online via TV Fanatic with over 6 options to watch the Castle S3E15 full episode. Affiliates with free and paid streaming include Amazon, iTunes, Vudu, YouTube Purchase, Google Play, and Verizon On Demand.
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Jason Wiles guest stars this week as a former friend of Castle's... and the main suspect in a case. This places Castle and Beckett on opposite sides of the investigation.