SERIAL GUNSHOT SLAYINGS HAVE DETECTIVES TARGETING TROUBLED COP -- When three Hispanic men are gunned down on one night, Detectives Goren (Vincent D'Onofrio) and Eames (Kathryn Erbe) first suspect a hate crime involving an angry, off-center police officer (as Tommy, guest star TBA) until they discover that the clever culprit exploited the cop's sleepwalking problem as a cover for the slayings that involve a family fortune. During their probe, the investigators also home in on a mousy woman (as Beth, guest star TBA) who lived next to the officer -- and they believe that she is highly motivated by revenge against someone.