Tomes in Amber
When the snows cover the forests around Lake Isen something stalks the lonely paths between the scattered human settlements. Over the years stories have called it a snow-maddened Halon Ranger, a vicious and cunning Bearfiend, vengeful raiders from the tribes of the Mountain Ghosts, or a brutal Giant-Kin hunter. Whatever it is, it strikes in the dark and takes lone and unwary travelers, leaving behind only the bloodless heads of its victims.
The first killings happened during the winter of the Year of Long Shadows, and several victims have been found every winter since, at first only during the deepest cold of winter, but more recently even as late as the spring melt.