Sam Waterston Exec. Asst. D.A. Jack McCoy Actor Jerry Orbach Det. Lennie Briscoe Actor Jesse L. Martin Ed Green Actor S. Epatha Merkerson Lt. Anita Van Buren Actor Elisabeth Röhm Serena Southerlyn Actor Fred Dalton Thompson Arthur Branch Actor Jay O. Sanders Guest Star Josh Stamberg Guest Star Bill Dawes Guest Star Peter McRobbie Guest Star Leslie Hendrix Guest Star J.K. Simmons Guest Star Reynaldo Rosales Guest Star Michael Kelly Guest Star Sue Jin Song Guest Star Dick Wolf Executive Producer William M. Finkelstein Executive Producer Arthur Penn Executive Producer