A series about crime as seen through the eyes of two police detectives and two prosecutors. In the first half-hour, Detective Mike Logan, who is dealing with the murder of yet another partner, Phil Cerreta, is teamed up with Detective Lennie Briscoe as they investigate crimes and apprehend law-breakers under the supervision of Captain Donald Cragen. Dr. Elizabeth Olivet is the precinct psychologist. In the second half-hour, the focus shifts to the criminal courts. Assistant District Attorneys Ben Stone and Paul Robinette, under the watchful eye of District Attorney Adam Schiff, work within a complicated justice system to prosecute the criminals.