Big Bang

NO NUKES -- A mail bomb that killed the wife of a nuclear physicist leads detectives to question the stability of the marriage. Forensics experts help Briscoe and Logan name a suspect, but Stone and Kincaid (Jill Hennessy) uncover a motive that no one suspected. Vincent Pastore (The Sopranos) guest stars.

Season 4 | Episode 16

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