Castle Season 3 Episode 21
Watch online episod 21 – "The Dead Pool"
College swimming team champion Zack Lindsey, self-made on a partial scholarship, is murdered during a nightly training session and dumped in the pool. Beckett and Castle wade through Zach’s, his teammates’, his coach’s and even retired predecessor Rob ‘Rocket’ Tredwyck dodgy connections, motives and alibis, involving car theft and doping. Meanwhile, Castle soon regrets bringing along his writing protégé Alex Conrad, whom Beckett surprisingly welcomes as eagerly as his crime authors’ poker club proves jealously aloof.