A true genius . . . Roald Dahl is my hero' - David Walliams WARNING: DO NOT try to make George's Marvellous Medicine yourselves at home. It could be dangerous... George Kranky's Grandma is a miserable grouch. George really hates that horrid old witchy woman. One Saturday morning, George is in charge of giving Grandma her medicine. So-ho! Ah-ha! Ho-hum! George knows exactly what to do. A magic medicine it will be! One that will either cure her completely of her horrible grouchiness . . . or blow off the top of her head! Roald Dahl is the world's NUMBER ONE storyteller!