WHO WANTS THE MAGICIAN DEAD?

Every night, a terrible spectre haunts the corridors of the castle. All the teachers at the School of Witchcraft and Wizardry have already suffered its spell: transformed into stone statues. All of them? No, because there's still one substitute teacher who has to protect the students and solve the mystery. The problem is that no one has ever seen him teach or use magic. In short, he's not our best hope, but he's the only one. He's going to need a helping hand!