Picture a world intricately entwined with our own yet separate, pulsing with the raw energy and vivid color of Celtic myth come to life. Picture Albion. And enter Lewis Gillies, an Oxford student whose search for a missing friend leads him through a door to another reality- and unimagined discoveries about life, good and evil, and his own identity and destiny. In an ancient cairn in the wilds of Scotland, Oxford student Simon Rawson vanishes, seemingly into thin air. Where has he gone? Unsettling signs -- a mysterious Green Man, a Celtic circle chalked on the sidewalk -- point his roommate, Lewis Gillies, to an impossible answer . . . and an incredible destiny on the other side of a doorway between worlds. There, where Celtic champions, magic, and treachery weave the beautiful and brutal land called Albion, Lewis finds Simon. And there, schooled as a warrior, he is thrust to the front of a titanic struggle between light and darkness -- a hideous, onrushing darkness that would devour not merely a kingdom, but two worlds.