Generation VI: The Underworld (Paperback) (ISBN-13: 9780578852942)

His mother's dying wish is impossible: "Find me."

Leo Maquari never really believed Prometheus brought civilization back from the brink of extinction. But when his mother passes, restless dreams plague him, warning him of the torments that await her if he can't bring her spirit peace. Guided by visions he's long denied, he descends into the Underworld, where primordial monsters roam, deceased relatives live, and long-buried secrets come to light. But the deeper Leo travels, the clearer it becomes that his greatest trial is not death itself, but what awaits him on the surface.