"The boys were lost in a close grey wilderness. To their left and right the dark bulk of the wall stretched a few yards before plunging from sight in the thick rolling blanket. Slowly they rose from their crouch under the wall and turned to look over the other side, straining their eyes into the swirling mist. Then they both heard it '" Magic on the moors, where mist hides the sunlit valleys below and strangers come walking out of another world. Magic...