Sally Gardner is an award-winning novelist from London. Her books have been translated into 22 languages and have sold more than 1.6 million copies in the UK. Sally continues to be an avid spokesperson for dyslexia awareness, working to change the way it is perceived by society. She was recently awarded the CARNEGIE MEDAL and the COSTA BOOK AWARD. Visit her website at http://www.sallygardner.net, and follow her on Twitter @TheSallyGardner and Facebook at https://www.facebook.com/SallyGardner.Author David Roberts is a hugely successful illustrator who has illustrated books by Philip Ardagh, Julia Donaldson, Jacqueline Wilson and Chris Priestley. He's also the creator of Dirty Bertie and the NEW YORK TIMES bestselling artist of picture books IGGY PECK, ARCHITECT and ROSIE REVERE, ENGINEER. David lives in London.