Marcus Schatten, a man with a shadow that has a mind of its own, literally, is betrayed and sent to work off a prison sentence on the border. There, he must guard the last kingdom of mankind from an evil that has consumed millions of lives. The Light Walkers wait just across a wide band of rain-drenched lands, wanting to pillage the last settlements man has built, but the technologies in this land are great enough to hold them at bay. Still, there...