Historian turned deputy Sheriff David Mapstone returns in Camelback Falls. When his friend Peralta, newly sworn in as sheriff, is shot by a sniper, "History Shamus" Mapstone can't keep a cool,
academic distance. And he'd better not: while Peralta lies comatose in the hospital, the powers that be appoint Mapstone acting Sheriff in his place. Meanwhile, a cryptic note scrawled by
Peralta before the shooting forces Mapstone to confront his own personal history, which has drawn unwittingly into danger. As Mapstone discovers, the past had deadly consequences. The mean
streets of the New West have never been more sinister.