They say blood is thicker than water. North Wales, Boxing Day 1987. Two children are dead: one an infant, found at the site of an ancient copper mine on the Great Orme, the other a young girl, her body laid out in a stone circle. DI Emma Grey's investigations uncover buried truths, old passions and even older hatreds. Her inquiries lead her to the Morris sisters, each with a story to tell. Just as the long stones keep secrets,...