Black Sabbath's Master of Reality has maintained remarkable historical status over several generations; it's a touchstone for the directionless, and common coin for young men and women who've felt excluded from the broader cultural economy. John Darnielle hears it through the ears of Roger Painter, a young adult locked in a southern California adolescent psychiatric center in 1985; deprived of his Walkman and hungry for comfort, he explains Black Sabbath as one might describe air to a fish, or love to an android, hoping to convince his captors to give him back his tapes.

A terrible event leaves Sean Phillips disfigured when he is only seventeen. In the weeks following the incident he creates an adventure game he calls the 'Trace Italian', where players awake in an apocalyptic America and make their way to safety across an irradiated landscape, decision by difficult decision. The years pass and Sean lives a quiet life enriched by his games. But when a pair of teenage sweethearts try to seek the Trace in the real world their actions prove fatal, and Sean is forced to confront the dangers of his creation and its origins in his own troubled past. A beguiling...