Castle (2009): Season 5, Episode 21 - ProjectFreeTV

5 - 21: The Squab and the Quail

When Beckett is assigned to protect Erik Vaughn, a billionaire entrepreneur whose colleague was murdered, she can't help but be charmed by this dashing genius. Meanwhile, consumed with jealousy, Castle does everything he can to solve the case to get Vaughn out of Beckett's life.