"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...When help arrives, however, the quarry is deserted and there is no sign of the body. Were the children mistaken? Is their father not dead? Did he simply get up and run away?...It seems like another unusual case requiring the expertise of Kate Shackleton--and...