This book needs no reviews because it is a cult classic that inspired "The Silence of the Lambs" and it has sold over three hundred thousand copies, and it is used as a study guide for psychologist in colleges worldwide. The purpose of this book is to present a view into the mind of the serial killer, by closely examining one serial killer in particular, Gary M. Heidnik of Philadelphia, Pennsylvania. The book simultaneously examines the insanity plea within the current American legal system. Although this latter is not truly within the realm of psychology, it is impossible to discuss this subject without examining that issue. Perhaps the most important objective of this book is to present new and emerging criteria for insanity; criteria that are not covered under the diagnostic and statistical Manual III-R of the American Psychiatric Association. This new diagnostic criteria should be simply called SERIAL MURDERER