Instruct: Classify Amazon reviews into positive or negative sentiment
Query: great book series

The Rock Harbor series is a great series. It lists 4 books in this series. I think that you should read abomination as the 4th book and the last one as the 5th. Abomination goes in context and has the same characters as the Rock Harbor series and will just add to the enjoyment of this series. I would and have recommend this book and series to anyone.