The book I read was about a 13 year old who lost his dad over 2 years ago. Since his dad went missing he has been trying to find him. While he did that Artemis kept the family business, of robbery smuggling and other illegal activity's, going. While he was doing this he found out fairy's have been hiding under the earth for 1000s of years. He uses this knowledge to capture a fairy and then uses it to get ransom gold. After all that happened he befriended the fairies and is using them to help him find his father. What he doesn't know is that there is an evil fairy that is trying to take over the underworld and kill all the humans. I give this book a 4/5. It's a great book for people that like puzzles and problem solving. http://en.wikipedia.org/wiki/Artemis_Fowl_(series) here is a link to find more info on the books and story line.