When rebellious Utah socialite Kirsten Young is found murdered in Provo Canyon with strange markings carved into her flesh and a note written in a 19th Century code, questions arise about the old laws of the Mormon Church. Journalist Selonnah Zee is assigned the story, which quickly takes on a life of its own. Even before the first murder is solved, several more victims appear, each one more mysterious than the last. Meanwhile, Sedonnah is distracted by her mother's onset of Alzheimer's and her sudden attraction to the mysterious Salt Lake City police chief who is investigating the murder.

Adding to a slew of other distractions, Selonnah's cousin, Roger, has recently converted and is now a public spokesperson for the Mormon faith. But paradoxically, Roger's wife, Eliza, is struggling to hold onto the Mormon beliefs of her childhood. If something is really from God, she wonders, why does it need to be constantly revised? Could the murderer be asking the same questions? And most importantly, will they be able to stop him before he commits his biggest crime, taking out a Mormon landmark and dozens of sightseers?