Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Love the Frank Quinn series

I've read 5 or 6 of these Frank Quinn series books and have enjoyed them all. I like the regular characters that are in them all and I like how the author writes; going back and forth between the killer's viewpoint, the detectives and the victims. It keeps you interested and wanting to know more. Some of the books are a little similar but I still really enjoy reading them. I would recommend reading them in order (the first one I came across was the 4th in the series and then I went back and read the previous ones). You can still follow the storyline if you don't do this, it's just better if you do