Young Hyrum Thayne, an unrefined geological surveyor, steals a massive dictionary out of the Grand County library in a midnight raid, startling the good people of Moab into believing a nefarious band of Book of Mormon thugs, the Gadianton Robbers, has arisen again. To make matters worse, Hyrum’s illicit affair with Dora Tanner, a local poet thought to be mad, results in the delivery of a bouncing baby boy who vanishes the night of his birth. Righteous Moabites accuse Dora of the murder, but who really killed their child? Did a coyote dingo the baby? Was it an alien abduction as Dora claims? Was it Hyrum? Or could it have been the only witness to the crime, one of a pair of Oxford-educated conjoined twins who cowboy in the La Sals on sabbatical?