Watch Castle Season 4 Episode 15 online via TV Fanatic with over 6 options to watch the Castle S4E15 full episode. Affiliates with free and paid streaming include Amazon, iTunes, Vudu, YouTube Purchase, Google Play, and Verizon On Demand.
|YouTube Purchase||Watch Now|
|Google Play||Watch Now|
|Verizon On Demand||Watch Now|
Castle and Beckett are after a killer this week, which leads them to a major conspiracy. Jennifer Beals guest stars.