True crime book are always hard for me to review. This one isn't different. There most of the them, a «personal» investigation put on paper, very factual, straight to the point, describing crime scene and patterns. What make a good one vs a bad one are the quality of the source, the numbers of elements and also the way it's recall we don't want them to become uselessly gore or go in details that are not important and just sensationalist. This one does it well, all is balance, and that why I think it's a good one if you like that kind of book!