Beyond the Barrier by Knight, Damon - 1965

New York: Macfadden Books, 1965. Mass Market Paperback. Fair. [Macfadden 50-234] reading copy only, heavy creasing to covers, edge wear, some yellowing; Out of the mists of his lost memory bright images began to float up. He saw the corridors of the City, and the colorful, floating throngs of Lenlu Din. He knew that the Shefthi were the warriors who protected the Din against the terrifying menace of the zugs. But nowhere was there an image of himself. His only clue to his forgotten past were those blood-chilling nightmares, and the haunting feeling that he had a task to perform. And even while he probed the dim memories, the nightmares grew more vivid, more horrifying.