As many have stated before me, this book was right up there with Hardy Boys and Nancy Drew. I love the rules, I love the mystery, and when it picks up and the real suspense starts, I LOVE IT! The author, Briana McDonald, takes on very difficult topics for youth in such a beautiful way, including loss of family members, divorce, transitioning and acceptance, just to name a few. These are neither treaded on lightly nor haphazardly thrown it, these topics are part of the characters as much as they would be part of any real world kid and makes these character feel all the more real. They develop gradually and we as readers see these characters grow past their problems and come to solutions, and mature thoughts. The mystery it self, oh boy, was throwing me for so many loops and unlike many books I've read, the ending was not predictable. Just when you think you have it solved, bam, a new piece of evidence to keep you on your toes and reevaluating your theory! Overall I can tell this will be a book I will be telling other readers about and suggesting to anyone up for the task of reading a brilliant mystery.