The Creakers by Tom Fletcher (Paperback, 2018)

Lucy wakes up one morning to discover something very strange indeed. All the grown-ups in her town have disappeared. All the other kids in Whiffington are so excited! No more grown-ups means no more school! No more bedtime! No more rules! But Lucy wants her mum back - and nothing is going to stop her. So - along with her friends Norman and Ella - Lucy sets off on an unbelievable adventure into a topsy-turvy, back-to-front and inside-out new world . . . The world underneath her bed. The world of . . . Th...