This book is well researched, well written and it kept me reading through the night which is great considering we are all home bound. It is a thriller of the non fiction genre and the story flows so well. I don't want to share any ending but as it is non-fiction you can guess what that is since this killer had to be brought forth and their story told. This book has incredible detail so as a reader you can follow this complex tail from start to finish. Rule has her mother's talent in writing and condensing and making sense of the story. So who did what has to stay a mystery until you pick up this book and read it. You will have to do that in a few short days as this book is hard to put down and walk away from. Keep the lights on!