Jo Cotterill believes that superheroes are really important. They are what we can all aspire to be: people who use their powers to fight evil and help others. When she's not trying to change the world, Jo makes up stories in her very untidy office-come-craft room, sometimes stopping to write music instead. Her other books include the Sweet Hearts series for Random House and the critically-acclaimed Looking at the Stars, which was nominated for the Carnegie Medal. Jo lives in Oxfordshire with her husband, daughters and two over-indulged guinea pigs.