DETECTIVES CONFRONT LETHAL NEMESIS NICOLE WALLACE IN WAKE OF MURDER; EX-'LAW & ORDER' STAR CHRISTOPHER NOTH RETURNS TO CAST AS MIKE LOGAN -- As returning Detective Mike Logan (former "Law & Order" star Christopher Noth) joins the Major Case team, Detective Goren (Vincent D'Onofrio) finds himself confronted again with Nicole Wallace (guest star Olivia D'Abo) -- his murderous nemesis -- when he and Detective Eames (Kathryn Erbe) check out the drug-related slaying of a city health inspector. The key link is the victim's brother Evan, (guest star Kevin J. O'Connor), a recently widowed medical examiner who is romantically involved with the re-surfaced Wallace, and the investigators fear that the man's young daughter might be Wallace's next victim.