Stella has always been different, but it's not because she's in a wheelchair - she's a superhero! But when a burglar breaks into Stella's school, she can't change into her disguise... Can Stella still save the day? Written by Katie Dale, this educational Early Reader book is book band Gold (aimed at 6-7 years, Year 2-3). The colour grading system is recognised by the Institute of Education which reflects the reading difficulty. The book content, language style, phonics and layout are taken into account to determine this.