Castle's back at one of his own schools and it already looks like he's already gotten himself into trouble.
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Why do Kate and Rick look as though they've been called down to the Principal's office on Castle. "Smells Like Teen Spirit" is the 15th episode of the show's sixth season.
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A murder in the fashion industry thrusts Kate and Rick in the middle of the cutthroat world of modeling on Castle. "Dressed to Kill" is the 14th episode of the show's sixth season.
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Kate Beckett is in her wedding dress in this first look photo. And she looks amazing!
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Wow. No one looks happy about whatever has been uncovered on Castle. "Limelight" is the 13th episode of the show's sixth season.
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Rick's wearing green. We don't see that very often on Castle. "Limelight" is the 13th episode of the show's sixth season.
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The young woman looks shocked at whatever is being revealed on Castle. "Limelight" is the 13th episode of the show's sixth season.
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Rick looks rather sullen as Beckett makes her arrest on Castle. "Limelight" is the 13th episode of the show's sixth season.
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Castle Quotes

Beckett: Wait, there's a sex scene in the book? Between us?
Castle: There's a sex scene between Nikki Heat and the roguishly handsome reporter who's helping her.
Beckett: Oh, good. So he's nothing like you.

So how did she take it, us being together?

Beckett