Law & Order Episode 16.19 Positive

BULLETS FLY AND VICTIM DIES WHEN SHOOTER SEEKS REVENGE FOR DEATH OF HIS AIDS-INFECTED BABY SISTER IN CASE RIDDLED WITH COMPLICATED ETHICS -- A deadly shooting in a diner leads Detectives Fontana (Dennis Farina) and Green (Jesse L. Martin) to a desperate triggerman who sought revenge for his baby sister who died of AIDS at a children's hospital. Further investigation soon reveals that a brilliant doctor (guest star Vondie Curtis Hall) was using the child as a guinea pig for experimental AIDS drugs. Taking the case to court, A.D.A. Jack McCoy (Sam Waterston) finds other youthful victims and must exploit the complicated ethical issues if he is to win a tough murder-one conviction against the passionate physician.