Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Short and Simple

I bought the four book set of Hamilton's Novel and I have to say the other three better be more in depth than the first. This novel was extremly simple and not at all graphic. I really don't understand all of the reviews saying that these books are erotic and violent. I didn't find either in the first installment. I was able to finish it because it is a pretty simple read and the lead character ( a sort of no-nonsense BUFFY) sort of grows on you. But the story has NO DEPTH at all. I hate to compare novels but after reading "Let the right one in", which is probably the best vampire novel since Rice's "Interview", I found myself day dreaming of another installment of that book while I was reading Hamilton's first book.