" And a soul would run by a living being, touch them softly on the shoulder or cheek, and continue on its way to heaven. The dead are never exactly seen by the living, but many people seem acutely aware of something changed around them. They speak of a chill in the air. The mates of the deceased wake from dreams and see a figure standing at the end of their bed, or in a doorway, or boarding, phantomlike, a city bus. "

― Alice Sebold , The Lovely Bones