In the Castle season 1 finale, "A Death in the Family" Kate Beckett is devastated when Castle does the one thing she asked him not to do, look into her mother's murder.
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Alexis attends her first prom in this episode. That's enough to make any father cry.
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Castle isn't always solving crimes. Sometimes, he just hangs out at home.
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Beckett and Castle look nice and fancy in this scene from Castle. Look out, bad guys!
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Just kiss her already! Many Castle fans wanna see the show's main characters hook up.
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Not to worry, Castle and Beckett are on the case! This is typically a bad thing for bad guys.
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Beckett comforts a little girl in this scene from "Hell Hath No Fury." The episode takes her and Castle into the world of politics.
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Kate Beckett has her hands full with Castle. And with various suspects.
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Castle Season 1 Quotes

Beckett: (Clears throat) Ahem. What's the deal with men and boobs, anyway?
Castle: Biological. We can't help it.
Beckett: But doesn't it bother you that they're so obviously not real?
Castle: (Pauses) Santa's not real. We still love opening his presents.

This isn't one of your books, Castle!

Kate