ACT OF MERCY? -- When Detectives Briscoe (Jerry Orbach) and Curtis (Benjamin Bratt) are called in to investigate the death of a 13-year-old quadriplegic boy, they are puzzled by the clues. After a suspect is found, McCoy (Sam Waterston) and Ross (Carey Lowell) find evidence that questions whether the murder was motivated by mercy -- or thrills. Steven Hill and S. Epatha Merkerson also star.

Season 8 | Episode 20

Jerry Orbach

Detective Lennie Briscoe

Angie Harmon

Assistant District Attorney Abbie Carmichael

Sam Waterston

Executive Assistant District Attorney Jack McCoy

S.Epatha Merkerson

Lt. Van Buren

Jesse L. Martin

Detective "Eddie" Edward Green

Benjamin Bratt

Detective Reynaldo "Rey" Curtis

Dianne Wiest

District Attorney Nora Lewin

Steven Hill

District Attorney Adam Schiff