GARY BUSEY AND JOE PISCOPO GUEST-STAR -- When the wife of once-popular crooner Johnny Vega (guest star Gary Busey, "Lethal Weapon") is found shot to death, Detectives Briscoe (Jerry Orbach) and Green (Jesse L. Martin) must sort through the couple's relationship for clues. While Vega's manager (guest star Joe Piscopo, NBC's "Saturday Night Live"), lawyer (guest star Bruce Altman) and adult sons hurry to defend him, Executive A.D.A Jack McCoy (Sam Waterston) and A.D.A Serena Southerlyn (Elisabeth Rohm) are more convinced of a familial connection to the crime.