"The reader walks effortlessly into a West long behind us, in this gorgeously written, taut mystery. Secrets are the fuel of all fiction—prepare for Moonshadows to burn brightly." –Ridley Pearson, New York Times bestselling author of The Red Room

Once again, Nellie Burns and Moonshine leap into trouble—this time in Craters of the Moon in southwest Idaho. Nellie accompanies Sheriff Asteguigoiri to the lava fields as his photographer. Three people are missing there, doing "God's work," according to Mayor Tom of a nearby town. Marked on maps as "unexplored" and "unknown," the miles of lava resist easy navigation and Nell's photography. Rosy Kipling, the one-eyed miner and Nell's friend, is recruited with Mayor Tom and Moonshine to assist in the search amidst concerns about a religious cult and money related to the missing. Physical obstacles as well as secrets and lies and consuming greed endanger all. And alone, Nell faces an attempt on her sanity and her life in this remote and almost inaccessible natural phenomenon.