On a stormy night in the Kingdom of Pergamontio, Mangus the Magician is summoned to the king's castle. Because Mangus has been under house arrest for confessing to be a magician, he and his loyal servant boy, Fabrizio, cannot imagine why the king is calling for him. But magic is exactly what the king needs. Night after night, a terrifying ghost has been haunting the princess, and the king demands that Mangus free his daughter from its torment... of pay with his life. Since Mangus doesn't believe in ghosts, his only hope is Fabrizio, who must solve the mystery using logic and reason-and a bit of magic of his own.