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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Rick Castle is very much a ladies man. It's easy to see why, isn't it?
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Rick Castle has never solved a crime before. But his people skills ought to help him get to the bottom of things.
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Castle is called in to help the NYPD because someone is copying killings from his novel. Here, detective Beckett takes a close look at a crime scene.
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Kate Beckett is all business. Until she meets Rick Castle, that is.
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Castle Season 1 Quotes

This isn't one of your books, Castle!

Kate

Kate: Are you here to annoy me?
Castle: I'm here for the story.