Synopsis: Back cover of 1968 Fawcett edition: "WAKE UP, DAMN YOU! See them all around you: zombies, devils, demons, slippery crawling things that make no noise when they move, yet leave a terrible scent as they pass...men without bones and scuttling creatures with black teeth pursue you through the dark night of the soul...how much longer will you deny their ghastly reality and live in your safe, silly world of crabgrass, button-down shirts and premium redemption stamps? Not much longer, you can be sure...GET READY FOR WHAT IS COMING! READ THIS INCREDIBLE BOOK!" Back cover of 1969 Coronet edition: "WAKE UP, DAMN YOU! See them all around: zombies, devils, demons, slippery crawling things that are silent when they move, yet poison the air as they pass...Men without bones and creatures without faces, scuttling through the night and destroying all your dreams...Dreams into nightmares, humans into poltergeists, four-legged pets into ten-legged monsters...How much longer will you be able to deny them? How much can your civilised mind stand? If you can't beat them (and you can't), don't try. Just keep the midnight oil alive."