Managing the investigative unit can be an extremely rewarding part of any law enforcement professional’s career, or it can be an absolute nightmare. The goal of this newly revised second edition is to continue to provide the investigative manager with the updated tools and techniques necessary to successfully manage the investigative unit. Many of these techniques and strategies were learned through trial and error. It begins with a look at the various elements of the investigative process. These elements include the basics of criminal investigations, the role of patrol in the investigative process, organizing the investigative unit, rank/position/status of investigators, selecting and supervising investigative personnel, developing new investigators, case management, managing confidential source programs, supervision of undercover personnel, raid and arrest planning, the qualifications for the undercover officer, and evaluating performance of personnel. Administrative considerations, such as managing confidential source programs and case management are examined in detail. The final sections of the book examines performance evaluation of investigative personnel, which differs greatly from the evaluation of patrol personnel. Investigative “marginal performers” are studied, and useful techniques for managing these individuals are provided. Methods of developing new investigators as well as mechanisms to train patrol personnel for potential assignment to investigations are also covered. In addition, the Appendices contains material and forms on responsibilities, time allocation, selection and application, case screenings, case reviews, referrals, fund and payment policy, operational plan, and evaluation design. The book will be useful for patrol officers or detectives who are interested in preparing themselves for supervisory or management positions.