The third edition of this popular volume continues to supply an up-to-date, nuts-and-bolts learning tool for students and an everyday reference for investigative professionals at all levels. " ? a comprehensive and authoritative examination of all the components involved in becoming a law enforcement and counterterrorism investigator."-Joshua Sinai, Perspectives on Terrorism " ? effectively lays out the fundamentals and guides the reader through the many types, forms, and methods of professional investigations in the private sector. As a reference and text for the novice or student, it is an excellent resource."-Eugene F. Ferraro, CPP, PCI, CFE, SPHR in Security Management