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Castle: The Squab and the Quail
When Beckett is assigned to protect Erik Vaughn, a charming billionaire entrepreneur whose life is in danger, she's forced to reflect on her relationship with Castle which has begun to plateau. Meanwhile, consumed with jealousy, Castle goes to extraordinary lengths to solve the case and separate the two of them.
The episode begins at a busy restaurant, where the waiters collect the orders from the kitchen. It is seen that someone (face not shown) sprays something on one of the plates. This plate is served at one of the tables, where a group of four, is having dinner. All of a sudden, the older man, Arthur, dies right at the table. At home, Castle is busy playing video games with a guy named Patel, online. Kate tries to seduce him, but he is so engrossed that he ignores her. Kate is pissed. ..Read the full recap
Originally scheduled to air as 5x22, it was switched with "Still" because of the bombings in Boston on April 15, 2013.