A teacher who worked in a school where a mentally challenged student was gang-raped is shot. The killing is revealed to be part of a vendetta, possibly tied in with the sexual assault. When time comes for prosecution, the attorney for the three rapists tries to secure a lesser sentence by arguing his clients did not know their victim was handicapped. Jennifer Bill makes her final appearance as Cathy, the troubled daughter of detective Lennie Briscoe (Jerry Orbach). ~ Hal Erickson, Rovi