This book examines the history of profiling, the the basis for and theory behind profiling as well as profiling as it is currently practiced. It details various psychology and sociologic theories that profiling is based on and come up with a unique, interdisciplinary approach to how can be validated, utilized, and properly implemented. Many books on criminal profiling cover how to unearth who the perpetrator of a crime is. This on focuses on how to unearth behaviors, clues, and 'triggers' to when, why, and how someone with bad intent may act on that intent.