Young Harriet and her brother Austin have always been scared of the quarry where their stone mason father works. So when they find him dead on the cold ground, they rush off quickly to look for some help. But when help arrives, the quarry is deserted and there is no sign of the body. Were the children mistaken? Is their father not dead? It looks to be another unusual case requiring the expertise of Kate Shackleton. Mary Jane, the children's mother, is adamant that only Kate can help. But a secret from Kate's past may put both Kate and her family at risk.