This book had me sat from the very beginning. The writing was great and it flowed very nicely, sometimes YA books are a bit choppy but this one I wouldn't have been able to tell if not for the age of the MCs. 
Everything about this book was great, but my favorite was the facts we get from her capstone project can be put together so you can figure things out right along with Pip. 
Very early on the pieces added up to one specific person that could've been behind the murder and it was a tad frustrating watching Pip try to cross them off because of personal relations, but understandable because you don't want to think the people close to you could do something so horrendous. The shock I got from the Final reveal at the end, I wish I could've bottled that feeling because at no point was that even a thought in my mind for what could have happened.