Positive

S16, E19: 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. Annie Parisse, S. Epatha Merkerson and Fred Dalton Thompson also star.