Castle

Season 4 Episode 14

The Blue Butterfly

20
Aired Monday 10:00 PM Feb 06, 2012 on ABC
AIRED:
8.9
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  • WILL THEY? WON'T THEY?

    Castle: The Best and Worst Episodes of Season 4 (Thus Far)

    Will tonight's season finale finally make good on all those wayward half-glances and repeated bouts of unspoken jealousy? Or will we be left dangling until next season? In anticipation of the big finish, let's look back at the season's best and worst moments to date.

  • Episode Summary

    In order to solve the current murder of a treasure hunter, Castle and Beckett must first solve a 1947 homicide that involved a hard-boiled private detective.

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