In this fourth delightfully disgusting adventure, can Neville help Rubella, his troll sister, shine in the spotlight? Rubella, grotsome and moodsie troll big sister, wants to be on the stage. Can Neville help his disgustingly rambunkin troll family get Rubella squeezed into a ballet tutu and tights, and into the starring role? The fourth book in Steven Butler's troll-tastic series will delight and disgust parents and children alike, especially fans of Roald Dahl or Andy Stanton's Mr Gum.