I just finished this book by a favorite author. It is actually the second in his youth series. The first book was called The Gates. If Douglas Adams wrote a children's book, about hell, children, kindly demons, evil demons, and a small dog this would be it. You genuinely care about the characters both good and bad. The language is beautiful, which I find to be a trademark of Connolly. His adult works, namely the Charlie Parker series, are much darker and equally eloquent and fun. I think what impresses me the most is how he can write with such beautiful use of language but not forget he is telling a story. I find that most writers tend to either tell a great story or use language beautifully they can't do both. I think this is sad. For me if you loose the story you loose me. Back to the Infernals. You should read The Gates first, many of the comments and wit will not make any sense if you don't. Depending on your child's reading level and your communication with said kiddo, I would not recommend this for children under 11. The subject matter is about the nature of good and evil. It would be a great jumping off point for a discussion of morality. But even if you don't have a child read The Infernals, and any other John Connolly book you can find. You will have a laugh and a good story.