The pocket-sized guide book is intended for law enforcement and land management agencies responsible for land-based search and rescue missions and is also useful for outdoor leaders. The information in the book is based on two premises, that a search is an emergency situation and that a search is a classic mystery. The guidebook contains information about theories and principles of land searches, search and rescue resources, search planning and execution, investigation principles, interviewing instructions, theory of search and detection probabilities, lost subject behavior, establishing search area, clue orientation, search team organization and management, base camp administration and organization, briefing and debriefing, medical aspects of searches, suspending searches, and demobilization. The book also contains checklists to use in the field, including a list of search and rescue resources, interview form, tracking charts, a lost person questionnaire and information form, and a helicopter request form. The guide presents much information in tabular form and contains many illustrations. (SB)