Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Great first novel!

I spent all weekend reading the book, it was spell-binding! I reallyloved it. I have read all ofthe Mary Higgins Clark novels and really love them. This was just asgood and I think I liked it better because it appealled to metechnically. I know a medicinal chemist, so I was very familiarwith the drug development subplot. I loved the writing too, very rich inmeaning. And a great story and a great protagonist. Can't wait for the next one.