Hunter Wilson barely escaped with his life from his last adventure in the Stranger World. Now he finds himself lost in his own world, thousands of miles from his home, and as far from discovering the secret of the Doors as ever. Meanwhile, Murphy the growff is on the other side, imprisoned in a fortress on the moon. Hunter's only hope to save his friend and make it back to the other world is to solve the puzzling riddle the trickster Raven told him when last they met. And if he can manage that, he'll still have his final and most terrible challenge left: to fight his way through a castle full of traps and monsters in order to face at last the immortal King of the Stranger World: the Dark Child.