Just when Kate Beckett thought she was getting the beautiful wedding she deserved, she was called to see Castle's car in flames on the side of the road in season 6 "For Better or Worse"
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After 4 seasons, Kate showed up at Castle's door to tell him exactly what she wanted. The kiss up against the door in "Always" left shipper hearts aflutter for the entire summer.
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Talk about a "Knockout" punch. In the Castle season 3 finale, Kate Beckett is shot by a sniper at Capt. Montgomery's funeral. All Castle can do is hold her and tell her he loves her.
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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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A charming man from Beckett's past turns up just before her wedding on the season finale of Castle. "For Better or Worse" is the 23rd episode of the show's sixth season.
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Who is the dead man that Kate had under investigation and how was he killed? "Veritas" is scheduled to air Monday, May 5th.
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Kate has a long history of keeping secrets. If she was performing her own private surveillance operation, did she share it with Castle?
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Kate Beckett may be in the crosshairs in an entirely different way. Will the
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Castle 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.

Sometimes the hardest things in life are the things most worth doing.

Castle