Super-smart inventor Mariella doesn’t have time for sleep in this funny and life-affirming gem from award-winning beloved author Eoin Colfer, featuring full colour illustrations from rising star Katy Halford. Mariella loves nothing more than inventing but bedtime keeps getting in the way of all her brilliant ideas! So when Mum and Dad won't take no for an answer there's only one thing for it… Mariella has to build a rocket-powered flying suit to zap her round the world faster than the setting sun! If anyone can outsmart sleep it's Mariella. But everyone needs sleep and without it all of Mariella's brilliant ideas might just disappear. A "how to live a happy life" tale told with humour, warmth and a loveable female protagonist.