This manual presents guidelines for organizing and operating an effective police intelligence unit. Emphasis is placed on the problems involved in combating organized crime, which includes much that is now being called 'white-collar' crime. It attempts to define the concept of intelligence and its role in the criminal justice system while at the same time providing a practical handbook for the law enforcement intelligence unit. In particular, the intent is to assist intelligence units, large or small, in their efforts against major crime in their jurisdiction, whatever its form. An introductory chapter outlines briefly the history and growth of organized crime in the United States as well as the infiltration of organized criminal elements into legitimate business and government, the social and economic impacts of this crime, and its implications for the criminal justice system. It defines the meaning of 'intelligence' as it applies to law enforcement agencies as a tool for fighting organized and white-collar crime. Finally, it discusses the growing public concern over the right-to-privacy issue and its legal implications for law enforcement intelligence units. Each subsequent chapter deals with a specific element of the intelligence function. An outline of the various sources and methods for gathering the kinds of information necessary to produce sound intelligence is followed by a discussion of the organization of the filing system for storing, protecting, and disseminating intelligence information. A fourth chapter provides techniques for developing hypotheses from raw intelligence data to produce and disseminate intelligence for strategic and tactical operations. Also considered are the staffing and training of the intelligence unit and its overall organization and management. Extensive appendices supplement the manual where more detailed discussions in particular aspects of the intelligence function are required.