TAPA DURA , LIBRO USADO, RECUERDA QUE EL 10% DE ESTA VENTA COLABORA CON FUNDACIONES QUE FOMENTAN LA LECTURA EN ZONAS VULNERABLES. Twelve-year-old Rudi stumbles upon a witch's lair while out hunting, takes a gold coin he finds there but loses it again, then must deal with the witch's servant who promises to end the town's rat infestation only if he receives that gold coin, in a story reminiscent of The Pied Piper of Hamelin.