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As Castle and Alexis travel to London, their routine flight turns deadly when the plane’s Air Marshal is found murdered. With the help of Beckett on the ground, Castle and Alexis race against time to find the killer before he carries out his fateful plan.
First Air Date : Mar 09, 2009
Last Air date : May 16, 2016
Episode : 173 Episode
Season : 8 Season
Runtime: 45 minutes
Studio: ABC
Country: United States of America