Dennis Farina Joe Fontana Actor Jesse L. Martin Ed Green Actor S. Epatha Merkerson Lt. Anita Van Buren Actor Sam Waterston Exec. Asst. D.A. Jack McCoy Actor Elisabeth Röhm Serena Southerlyn Actor Fred Dalton Thompson Arthur Branch Actor Michele Santopietro Guest Star Roma Maffia Guest Star Joseph Murphy Guest Star Leslie Hendrix Guest Star Robert Hogan Guest Star J.K. Simmons Guest Star Amy Carlson Guest Star Maggie Burke Guest Star Laurence Lau Guest Star Dick Wolf Executive Producer William M. Finkelstein Executive Producer Arthur Penn Executive Producer