Instruct: Classify Amazon reviews into positive or negative sentiment
Query: A Great Mystery

Definitely the next Mary Higgins Clark here, who happens to be my favorite author.The book is very suspensful and intriguing. The only bad thing I can say about it is that it's written in the present tense (Rory shrugs her shoulders), which can be a bit distracting.I admit that about a third of the way into the book I was sure I had figured out who the killer was, but I kept reading...and I was pleasantly surprised to find that I couldn't have been more off base. A definite must-read.