Toadblatt's School of Sorcery: Grim gets Billy and Mandy into Toadblatt's Summer School of Sorcery, where they join Nigel Planter's infamous Weaselthorpe House to compete against Gunderstank House. | Educating Grim: Mandy's arch-nemesis, Mindy, befriends Grim. But is Mindy all that she seems? | It's Hokey Mon!: Grim magically brings Billy and Irwin's monster cards to life.