Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Introducing Maura Isles!

I love this series. This is the first appearance of Maura Isles, who is my favorite character. I had already seen the episode that was based on this book, so I knew the overall plot line. There were big differences in characters, but I like both the books and the show. Tess Gerritsen's work is amazing.