The report discusses many ways for police managers to improve the success of their departments' criminal investigation efforts. Management issues addressed include budgeting and allocating resources; improving relationships with the prosecutor; interacting with the public, especially victims and witnesses; improving relationships between investigators and patrol officers; decentralizing detective assignments, particularly in neighborhood team policing approaches; using civilian employees for investigative tasks; assigning personnel; supervising and training investigative personnel; improving investigative procedures; and conducting investigative activities not related to specific cases. The report's suggestions are based on an examination of the investigative practices of six selected police departments, a review of the relevant literature and recent experiments in other departments, and the observations and conclusions of a panel of experienced police officials. Facsimile reproductions of forms used in investigative police work illustrate the text. Appended are: instructions to prospective lineup witnesses, District of Columbia Police Department; evaluation guide for the New York City Police Department; a collection of measurement techniques for evaluating innovative police programs; and materials on management by objectives. (Author/AJ)