I love an amateur sleuth story!
With that disclosure, I was pretty sure I had it all figured out with my first hunch by chapter 6. Obviously, I didn't, or I wouldn't be giving this one 5 stars. 
I really enjoyed the pace of this book, and by chapter 19, that pace jumped up, and I just couldn't put it down. There were twists and turns, and I was obsessed with getting to the bottom of it. The multiple POVs adds so much to the story.
Think Nancy Drew all grown up, and one of her old cases forces her back into her old, sleuthing ways!