Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Vague characters in a predictable police drama

What a waste of time and money! I bought this book per a bookseller's recommendations and don't understand what the hype is all about!The characters are never fully formed so you feel like they are ghost-like with no substance and no depth! I tried, I really did try getting into this but I sped-read the last half and then gave up...who cares what happens at the end when there is no character development and the storyline drags!If you want a good thriller, try Cruel and Unusual Punishment by Patricia Cornwall.