The Erlking is a classic German folktale about a supernatural being who lures children away from their homes. In the story, a father and his son are riding through a dark forest when they hear a mysterious voice calling out to the boy. The father soon realizes that it is the
From Wikipedia
In European folklore and myth, the Erlking is a sinister elf who lingers in the woods. He stalks children who stay in the woods for too long, and kills them with a single touch.