Castle 3XK (Season 3, Episode 6)
TV-PG
TV Episode | 43 min | Comedy, Crime, Drama

Castle

3XK (Season 3, Episode 6)

TV-PG

TV Episode | 43 min | Comedy, Crime, Drama

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 ...See moreWhen 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 See less

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Cast	+ Add Cast
17 cast members

Name	Known for
Nathan Fillion Richard Castle Richard Castle See fewer	Castle (2009)
Stana Katic Kate Beckett Kate Beckett See fewer	Castle (2009)
Susan Sullivan Martha Rodgers Martha Rodgers See fewer	Dharma & Greg (1997)
Ruben Santiago-Hudson Captain Roy Montgomery Captain Roy Montgomery See fewer	Ma Rainey's Black Bottom (2020)
Molly C. Quinn Alexis Castle (as Molly Quinn) Alexis Castle (as Molly Quinn) See fewer	Castle (2009)
Jon Huertas Javier Esposito Javier Esposito See fewer	This Is Us (2016)
Tamala Jones Lanie Parish Lanie Parish See fewer	Blue Streak (1999)
Seamus Dever Kevin Ryan Kevin Ryan See fewer	Castle (2009)
Lee Tergesen Marcus Gates Marcus Gates See fewer	Oz (1997)
Michael Mosley Jerry Tyson Jerry Tyson See fewer	Ozark (2017)
Brian Klugman Paul McCardle Paul McCardle See fewer	The Words (2012)
Anne Marie Howard Angela Russo Angela Russo See fewer	Prince of Darkness (1987)
Joe O'Connor Cal Townsend Cal Townsend See fewer	The Green Hornet (2011)
Ping Wu Dr. Lee Dr. Lee See fewer	Silicon Valley (2014)
Mark Berry Warden John Peck (uncredited) Warden John Peck (uncredited) See fewer	Blade: Trinity (2004)
Hannah Rose Brown Murder Victim (uncredited) Murder Victim (uncredited) See fewer	CSI: Crime Scene Investigation (2000)
Mandy Kowalski Kim Foster (uncredited) Kim Foster (uncredited) See fewer	Captain America: The Winter Soldier (2014)