When a beautiful woman is found dead in an alley, all clues point to her being a victim of the notorious Triple Killer. The Triple Killer, or 3XK, terrorized New York City four years ago, ... See full summary »

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Cast

Episode credited cast:
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Alexis Castle (as Molly Quinn)
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Paul McCardle
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Angela Russo
Joe O'Connor ...
Cal Townsend
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Dr. Lee
Rest of cast listed alphabetically:
Hannah Rose Brown ...
Murder Victim
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Storyline

When a beautiful woman is found dead in an alley, all clues point to her being a victim of the notorious Triple Killer. The Triple Killer, or 3XK, terrorized New York City four years ago, then mysteriously disappeared. Now he's back. In a deadly battle of wits, Castle and Beckett race against time to stop 3XK before he claims his next victims. Written by ABC Publicity

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TV-PG | See all certifications »
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Release Date:

25 October 2010 (USA)  »

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16:9 HD
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Did You Know?

Trivia

The medical condition that the first suspect (at the beginning of the episode) describes as having is real. It is called, hyperhidrosis, it causes people to sweat more than usual (excessive perspiration). This occurs in about 3 percent of the population and 6 percent of the Asian population. See more »

Goofs

After 3XK collects Detective Ryan's gun and Badge he checks the gun's magazine reinserts it then racks the slide to load it. After spending some time talking with Castle 3XK you can hear the gun's slide being racked again. If we assume the gun was loaded from racking the slide the first time there is no need to load the gun again. See more »

Quotes

[first lines]
Alexis Castle: What about Ashley? I mean, shouldn't I tell him?
Martha Rodgers: Darling, in matters of the heart, it's best not to overthink things.
Richard Castle: That's your advice, mother? With your track record? What chasm of doom has she led you to by way of her tips on romance?
Martha Rodgers: As it happens, we were discussing secret admirer etiquette.
Richard Castle: You have a secret admirer?
Alexis Castle: I always thought it was silly, but now I'm kind of intrigued.
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Connections

Featured in Castle: Resurrection (2015) See more »

Soundtracks

Without You
(uncredited)
Performed by Derek Evry
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