Artemis Fowl

The book I read is called Artemis Fowl it is written by Eoin Colfer and the genre of it is Science fiction because it includes fairys, goblins etc and lots of technology.

In this book it is about a 12 year old boy mastermind/criminal called Artemis Fowl and his bodyguard, Butler kidnapping a fairy called Holly Short keeping her in a cell.
The fairys try to save her but struggle until dwarf Mulch Diggums comes they save Holly and release a troll in the house Butler heroically beats the troll but gets hurt very hard and Holly needs to use magic to heal him.