The demons lexicon

This is a very interesting book with a horror genre. The two main characters are Nick and his brother Alan. This book is unlike other books which mostly has vampires, instead there are demons who have been chasing the boys for a long time tor retrieve a stollen charm. According to the text, the charm was 5000 years and old and Nick's mother stole it when she used to work for the magician, Arthur. The demons could come in any form and would do anything to come into the Earth. If they give you the three tier you are bound to die and there's no way any one coulds save. Alan and Nick had been fighting a demon in form of a snake when Alan got bitten. To get rid of it, the boys seek help of the "Goblin market", filled with magical wonders and secrets.
In my opinion the book is very adventorous and packed with magic though I am curious what will happen to Jaime who has recieved the third tier mark.