Sean Hudson thought nothing of hopping a fence to dig illegally for Native American arrowheads, spear points, and other artifacts. Did his thieving, trespassing ways get him killed? How else to explain the small pickaxe that was found sunk deep into his skull? Blanco County game warden John Marlin has dealt with these kinds of looters before, so it's no surprise when the sheriff asks him to assist with the investigation. Marlin quickly learns that this case - like the soil at a dig site - has many layers.