 Oh, my God. One thing I really like in a radio story... What's back there? It looks empty. No, there's someone living back there. ...is a mystery. I'm not going back there. There's somebody's hair. There's a head in there. There's a shrunken head right there. Mysteries explained each week in This American Life. It's Santa Claus. Resident Evil? Saturday at 1 and Monday at 8 p.m. on 89.1 KUAR.