The Channel Island of Guernsey seems to be an ideally peaceful place for summer holidays -- or so 14-year-old Mike thinks until he sees the strange flickering lights up on Trepied Hill, just behind the house where he is staying with his divorced father. His new friend Lisa insists a coven of witches meets each Friday night at a prehistoric tomb on the hill, but Mike, taught by his father that everything has a logical explanation, is skeptical. Soon a series of terrifying events occur as Lisa falls into the hands of the enemy and Mike is confronted by inexplicable forces. He must draw on all his courage and determination to fight the terrifying evil that threatens to engulf them. Award-winning writer Welwyn Wilton Katz is noted for her keen knowledge of ancient mythologies and her ability to bring shudders to young readers. Called a "genuine junior Gothic chiller" by Quill and Quire, this gripping novel -- a Canadian Library Association Book of the Year for Children Award nominee -- is no exception.