Joe Navarro, Special Agent (ret.) is a 25-year veteran of the FBI where he served as both an agent and a supervisor. He is the author of numerous articles for the FBI Law Enforcement Bulletin as well as books including: "Advanced Interviewing Techniques" (CC Thomas Publishers); "Hunting Terrorists: a Look at the Psychopathology of Terror" (CC Thomas); "What Every BODY is Saying" (Harper Collins - translated in 27 languages) and "Dangerous Personalities" (Rodale - translated in 11 languages).