From the introduction:
The word “Undead” conjures up images of skeletons, of desiccated corpses walking, searching, and seeking the flesh of the living. Images of terror and unending pain, of beings that know no hunger or thirst, whose hatred of the living burns eternally into their unliving bodies. Across the wastes, stories abound of the foolhardy treasure-seekers that enter ancient ruins, looking for gold or the rare piece of metal, only to have their spirits devoured by the creatures of the Gray. In some of the stories, these would-be heroes rise again, forever serving their new master, their lives a long cold unending night of pain and hunger. They hunger for the living, hunger for a taste, a smell, anything that would remind them of that from which they have been forever cut off.