SIBLING RIVALRY -- A baby boy's poisoning leads detectives to a baby food manufacturer, but the real culprit might be in the family. Poison is found in the nanny's room, leading to her arrest. During the trial, however, Kincaid and McCoy discover that the baby's older half-brother -- jealous of the attention paid to the new baby -- killed him. Patti Lupone (Life Goes On) guest stars.

Season 6 | Episode 22

Jerry Orbach

as Detective Lennie Briscoe

Angie Harmon

as Assistant District Attorney Abbie Carmichael

Sam Waterston

as Executive Assistant District Attorney Jack McCoy

S.Epatha Merkerson

as Lt. Van Buren

Jesse L. Martin

as Detective "Eddie" Edward Green

Benjamin Bratt

as Detective Reynaldo "Rey" Curtis

Dianne Wiest

as District Attorney Nora Lewin

Steven Hill

as District Attorney Adam Schiff