Halrin, Pennsylvania seems like a town that no one ever really leaves. It's produced no one famous, and anyone who moves out for college always ends up coming back. No one thinks anything of it; it's just a tradition that hasn't been broken.  After his twin brother, Luke, is affected by a strange epidemic of sleepwalking that has washed over the town, Michael Lepley must investigate it. But the deeper he digs, the more he finds how unnatural things are-- and how tied they are to the history of his strange town.