The shooting death of a young woman points to Ryan's stolen gun as the murder weapon - the gun stolen earlier by serial killer 3XK. Now Castle and Beckett are up against the clock to track down 3XK before he kills again.
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Castle: I know who the killer is.
Beckett: Castle, we just got some bad news, so no hypotheticals. Just give us a name.
Castle: Well, I have to start at the beginning...
Beckett: Name.
Castle: Jinhai Li Chang.
Beckett: Okay, start from the beginning.
Castle: I like to pretend I'm Beckett's partner, like I'm one of them, but days like today, I realize (pauses) that I've just been playacting.
Martha: Oh... Your playacting once helped save New York City as I recall. Be there for your friends. Stand beside them, work together. That's plenty useful. Trust me.
Original International Air Dates:
Canada: October 10, 2011 on CTV
Australia: February 21, 2012 on Channel 7
United Kingdom: March 28, 2012 on Alibi
Germany: March 23, 2012 on Kabel 1
S 4 : Ep 23
Aired 5/7/12
S 4 : Ep 22
Aired 4/30/12
S 4 : Ep 21
Aired 4/16/12
S 4 : Ep 20
Aired 4/2/12
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… read more
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