What haunts us? What can’t we let go of? A tennis prodigy collapses after his wins, crediting them to an invisible, not entirely benevolent presence, until one day he vanishes. A series of ghosts appear at their former bedsides, some distraught, some fascinated, to witness their unfamiliar occupants. A woman returns from a visit to Alcatraz with an uncomfortable feeling. The spirit of a prisoner has attached himself to you, a friend tells her. He sensed the empathy you had for those men.