'If the dead only knew, they would spin in their graves.' But what if the dead are not to be found in graves at all, but in a world beyond graves, from where they could exercise omnipotent powers to investigate the circumstances of their deaths? The late Mark E Larker, fashion photographer, is a case in point. When he exercises his powers in this way, he finds the circumstances of his death to be less than kosher. One Harry McMinn,...