Offender profiling is an investigative tool used to narrow down the range of potential suspects for a crime by predicting the personality, behavioral, and demographic characteristics that an offender is likely to possess, based upon information collected at the crime scene. While offender profiling has been popularized by TV shows and movies such as , , and , the real-world impact of offender profiling is largely unknown. This book discusses the history of offender profiling, summarizes research on offender profiling methods, and reviews offender profiling evaluations of accuracy and applied impact.