One lovely summer afternoon a little boy was sitting on the edge of the cliff that skirts the old churchyard of Raxton-on-Sea. He was sitting on the grass close to the brink of the indentation cut by the water into the horse-shoe curve called by the fishermen Mousetrap Cove; sitting there as still as an image of a boy in stone, at the forbidden spot where the wooden fence proclaimed the crumbling hollow crust to be specially dangerous-sitting and looking across the sheer deep gulf below.