Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Disappointed again.

I use to wait anxiously for the Kay Scarpetta books to come out but have noticed the last couple haven't been up to par. I was really disappointed in the ending of this one. It was so vague that if you weren't familiar with the author's style, you would not have gotten the ending. And it seems like the relationship between Kay and Lucy never changes. It really needs to go somewhere so we're not reading the same lines in every book. Hopefully if there is a next Scarpetta book, we'll see some much needed changes.