he fourth season of Law & Order: Criminal Intent premiered on NBC on September 26, 2004, and ended May 25, 2005. The series remained in its time slot of Sundays at 9 PM/8c, but the season finale episode "False-Hearted Judges" aired on Wednesday, May 25, 2005 at 10 PM ET/9 CT.

Stars Vincent D'Onofrio, Kathryn Erbe, Jamey Sheridan, and Courtney B. Vance returned for the fourth season. Around mid-season, star Vincent D'Onofrio fainted twice from exhaustion, once on set and again at his home. Writers René Balcer and Elizabeth Benjamin won an Edgar Award in the category Best Episode in a Television Series Teleplay, for the episode "Want". Almost three months before the fourth season finale, it was announced Chris Noth would join the show in the fifth season, alternating episodes with D'Onofrio, due to his health issues at the time.

Overview from themoviedb.org