I admit I was very interested to see how writing a Fantasy type story would pan out as opposed to the Action/Adventure books he normally writes. No disappointment for me, as Mathew adds so much detail, but the writing is simplistic and easy, ideal for an adolescent audience. The story revolves around a young orphaned boy and his sister who live in an isolated, small village ruled by Trolls. There is a dreadful illness killing tribe members which is based around family and hierarchy. To add to the village problems the Trolls have cut off their water supply leaving them with just a trickle for survival. When his sister becomes ill it spurs Raf into a quest to steal a cure, which the Trolls possess. Thus the adventure begins! As with all of Mathew Reilly's stories this is a fast paced, action packed adventure that you will find it hard to put down. The strategies used to confront his foes not to mention the difficulties on this quest are well thought out and unexpected. The amazing fortress of the Trolls is extensive and the courage required to conquer all of this and escape will keep you on the edge.