Complete story — includes the ending
Fiancée of Brad Wycliff, Allison Jenkins, is murdered while walking to the Wycliff home of her future mother-in-law Lenore Wycliff and Brad's brother, Jared. Their investigation leads them to Lenore's brother, using the names David Blake and Roger Wither, a former child chess prodigy. He has become highly paranoid and is blackmailing Brad into giving him the large sum of money he won years earlier in an unsanctioned chess game in Cuba against a Russian master. Goren and Eames uncover that he killed Allison Jenkins in the mistaken belief she was surveilling him and then successfully talks him out of committing suicide convincing him that as in chess, it's better to draw rather than lose the game.
Sources and content license
Source and revision history · Adapted from Wikipedia contributors, Law & Order: Criminal Intent season 4. HTML formatting and reference markers removed. · Content license