Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Good, but not great; definitely worthwhile

I just read The Fallen Angel - my first Gabriel Allon book, and the twelfth and latest in the series - and was so impressed that I decided to read the full series starting with The Kill Artist, the first book in the series. The Kill Artist was not as polished The Fallen Angel, but is, nevertheless, a good read for those who enjoy spy thrillers with lots of twists and turns. I look forward to getting my hands on The English Assassin, the second book in the series. A solid four star novel.