Rachel O'Brien Rockwood, like her stepfather J. D., longs to hunt criminals and other miscreants. So when, in 1887, during the height of US anti-polygamy legislation, two federal deputies on the lookout for Mormon polygamists are murdered in the small village of Centre, west of Salt Lake City, she jumps at the chance to join the investigation. But detecting never runs smoothly—Rachel and J. D. butt heads regularly over method and approach. Rachel favors talking and uncovering motives. J. D. prefers tracking and searching for the murder weapon. Also there are too many suspects—nearly every villager wanted the deputies gone. As fast as J. D. and Rachel can uncover clues, the local Mormon bishop brushes them aside, insisting instead that the deputies committed thievery and fled westward. Whose theory is true—Rachel's, J. D.'s, the bishop's? Or will the story be shaped by the federal marshal, openly hostile to all things Mormon?