:O That's the first thing I'm gonna type in this review other than this sentence. :O 
 Eoin Colfer has worked his magic again in this book! Artemis, Holly, Mulch, Butler, and Foaly all return! Sadly, along with our most wanted super-crazy-villain. 
 This book takes place at the Fowl Estate most of the time, in Dublin(Pretty sure it's Dublin....). If it's not at Fowl Estate, in the the Lower Elements under the earths crust. Opal Koboi is back and needs to be stopped. 
 The main conflict you ask? Opal has risen warriors from the earth, and Artemis and the gang have until sunrise to return them back to the earth unless they want Opal to succeed and take over. 'That crazy pixie'. 
 I loved the laughs in this book. Mulch was awesome! I loved reading his parts because I giggling, and giggling. Most of the time I was reading, crazy giggling could be heard, or complete silence because I was sucked into the book. :) Artemis was awesome, as always. Holly was Holly and naturally did what she thought. :) Foaly is the best centaur I've read about(Actually is the only centaur I've read about). The book had enough action to even out the laughs and sad spots. 
 I admit though, I expected the ending. I seriously did. I thought it would happen a different way, but still, I expected it. I feel like he might have left it a little unfinished. He made it so more adventures could happen, he didn't say any of the characters' futures. :( I just hope a spin-off series will bring our famous Artemis Fowl back. 
 I recommend to people who have read the previous Artemis Fowl books, adventure and comedy books, people who like a good twist in their books. If your child can take a little blood and near death too, they would like this. Altogether, ages 8-Adult, 8-year-old depending on if they can hadle blood and near death.