This book was great! I've read Mindhunter and found it far too difficult to enjoy because of John Douglas and his "I'm so fabulous" schtick. Instead, A Killer By Design is written by a woman who was involved in developing criminal profiling alongside Douglas and others but is told in a much much better way. There is no hint of that "I'm so fabulous" attitude. She refers to low-profile and high-profile criminals to illustrate how the science of criminal profiling evolved during the development of the Behavioural Science Unit at the FBI. This was a fascinating read. It was scientifically written (but not obnoxiously scientific), with focus on victimology rather than glamourising the actions of serial killers and shows how effective criminal profiling is in a range of cases.