Hardcover, ex-library. Viking Kestrel, 1985. In very good condition, with usual library markings. Stephen, a city boy, comes to stay with his country cousin, Louie, and is having a great time hiking, canoeing, camping and swimming. But then the local bullies decide to give them a bad time. And they decide to get even - and it gets worse! Stephen meets Angus, a mysterious Indian mask carver - and then he finds out the masks have powers!