Introduction to Criminology‎,‎ Sixth Edition is a comprehensive introduction to the study of criminology and includes oneachapter on the criminal justice system‎.‎ It aims to avoid an overly legal and crime control orientation and instead concentrates on the vital core of criminological theory‎-‎-theory‎,‎ method‎,‎ and criminal behavior‎.‎ Hagan investigates all forms of criminal activity‎,‎ such as organized crime‎,‎ white collar crime‎,‎ political crime‎,‎ and environmental crime‎.‎ He explains the methods of operation‎,‎ the effects on society‎,‎ and how various theories account for criminal behavior‎.‎