The episode was directed by Jim McKay and written by René Balcer and Ed Zuckerman.
Law & Order Season 18, Episode 18: " Excalibur " is the eighteenth episode of the eighteenth season of the long-running police procedural and legal drama Law & Order . Originally aired on May 21, 2008 , the episode serves as a high-stakes finale to the season, blending a brutal murder investigation with a political scandal that directly threatens the career of Jack McCoy . Plot Summary [S18E18] Excalibur
The episode begins with the discovery of a body in a jewelry refinery furnace. Detectives and Kevin Bernard investigate the victim, jeweler Victor Madison, and uncover a suspicious bank deposit. The trail leads them to Madison's brother-in-law, who is revealed to be operating a high-end illegal prostitution ring known as "The Excalibur Club" . The episode was directed by Jim McKay and