Overview
With tensions rising between Castle and Beckett, Castle finds himself a new partner -- Detective Ethan Slaughter (guest star Adam Baldwin, "Firefly"), a tough and colorful cop from the city's gang unit. But Castle gets more than he bargained for when Slaughter shows him a grittier side of police work that puts Castle in the line of fire like never before
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4 - 1Rise September 19, 2011 -
4 - 2Heroes & Villains September 26, 2011 -
4 - 3Head Case October 03, 2011 -
4 - 4Kick the Ballistics October 10, 2011 -
4 - 5Eye of the Beholder October 17, 2011 -
4 - 6Demons October 24, 2011 -
4 - 7Cops & Robbers October 31, 2011 -
4 - 8Heartbreak Hotel November 07, 2011 -
4 - 9Kill Shot November 21, 2011 -
4 - 10Cuffed December 05, 2011 -
4 - 11Till Death Do Us Part January 09, 2012 -
4 - 12Dial M for Mayor January 16, 2012 -
4 - 13An Embarrassment of Bitches January 23, 2012 -
4 - 14The Blue Butterfly February 06, 2012 -
4 - 15Pandora (1) February 13, 2012 -
4 - 16Linchpin (2) February 20, 2012 -
4 - 17Once Upon a Crime February 27, 2012 -
4 - 18A Dance with Death March 19, 2012 -
4 - 1947 Seconds March 26, 2012 -
4 - 20The Limey April 02, 2012 -
4 - 21Headhunters April 16, 2012 -
4 - 22Undead Again April 30, 2012 -
4 - 23Always May 07, 2012
