The dead live again in this haunting compendium of ghostly visitations through the ages, exploring the history of our fascination with zombies and other restless souls.   Since ancient times, accounts of supernatural activity have mystified us. Ghost stories as we know them did not develop until the late nineteenth century, but the restless dead haunted the premodern imagination in many forms, as recorded in historical narratives, theological texts, and personal letters. The Penguin Book of the Undead teems with roving hordes of dead warriors, corpses trailed by packs of barking dogs, moaning phantoms haunting deserted ruins, evil spirits emerging from burning carcasses in the form of crows, and zombies with pestilential breath.