LAJITAS -- Strange tales have always sprung from the Big Bend -- the Marfa lights, the discovery of an alligator in the Rio Grande -- but none stranger than the growing epic of the assault on the mayor of Lajitas. It's a story with larger-than-life elements: a millionaire and a movie star, an irate stone mason and a stealthy act of violent revenge in a border town, the castration of a magistrate in the dark of night. Added is the singular nature of the victim: Clay Henry III, a duly elected figure who happens to be a red and...