I was really impressed by the hard work of the author. The book is very well documented, although we learn a lot about it on the Black Dahlia, but also on other large business or personalities crime linked to it in some way. I had heard of the story of the Black Dahlia course, but through this book and talent of Stéphane Bourgoin, I understand better why this case is so mythical and continue to be, despite the dazzling revelation of author.