Yes, I read all four books. In my opinion, this is the best one, and the lowest would probably be the third because it doesn't have much to do with the other books in the series. I've got to be honest, the only reason I actually stuck with this series was because of the character of Doon. He was interesting, and clever. I thought Lina in the book was ok, but a bit bland. Nothing about her was all that interesting except her adorable little sister, and the fact that she lived underground. I lived the cover of the second book! Very nice series, I'd recommend to most of my friends.