In the late-19th century Arizona Territory, Nora is awaiting the return of the men in her life—her husband, who has gone in search of water, and her elder sons, who have vanished after an explosive argument. Nora is biding her time with her youngest son, who is convinced that a mysterious beast is stalking the land around their home. Here the author of the National Book Award finalist The Tiger's Wife also traces the paths of the outlaw Lurie, who finds reprieve in an unexpected relationship, and embarks on a momentous expedition across the West.