One of the things she overheard that day was a brief story about a demon named Opso. An old legend, Brenda understood, concerning a bridge and a mirror deep in the woods. A demon’s mournful cries, a lament in the moonlight, the clip-clop of demon feet on weak, eroded wood. An entity, Brenda heard, with a strange name and an even more unsettling goal: to find a face to replace the one it was missing.