Troll Fell is a very good book by Katherine Langrish. It is about a boy named Peer. Peer’s father had just past away when his mean uncles, Baldur and Grim, came to take him away to their mill. The thing is the mill is in Troll Fell, and a secret kingdom of trolls live beneath Troll Fell. Then one day Peer finds out that his uncles are planning to sell children to the troll king. So he has to stop his uncles, but he is not alone. A girl and a house spirit want to help. If you want to read this book then check it out and read it! Oh and by the way I loved this book. I would recommend this book to anybody who likes fantasy and adventure. On a scale from 1-10 I would pick 10.