Watch a sneak peek of the new episode of LAW & ORDER "Four Cops Shot" Season 20 Episode 17 which airs Monday March 22 (8-10 p.m. ET) on NBC.
Episode Summary: When Detectives Cyrus Lupo (Jeremy Sisto) and Kevin Bernard (Anthony Anderson) arrive on the scene of four fallen police officers, they have to act fast to find the shooter. With a room full of witnesses, they have a description of the culprit but little else. The case becomes even more complex when the detectives discover that the police officers may have known the shooter. The investigation quickly leads them to a circuit of drug dealers, a jealous husband and a remorseful judge who are all pieces of a larger puzzle. Also starring: S. Epatha Merkerson (Lieutenant Anita Van Buren), Sam Waterston (District Attorney Jack McCoy),