Although there is a plethora of studies on crime and punishment, law enforcement is a relatively new field of serious research. When courts, sentencing, prisons, jails, and other areas of the criminal justice system are studied, often the first point of entry into the system is through police andlaw enforcement agencies. Unfortunately, understanding of the important issues in law enforcement has little general literature to draw on. Currently available reference works on policing are narrowly focused and sorely out-of-date. To this end, a distinguished roster of authors, representing many years of knowledge and practice in the field, draw on the latest research and methods to delineate, describe, and analyze all areas of law enforcement.