When Harry and his dinosaurs go on a sleepover to Jack's house, they have so much fun there's no time to miss home. But when it gets dark and things go bump in the night, suddenly the dinosaurs are not so sure. Luckily, Harry has his friends to look after him and make sure they all have a roaringly good time.

Having spent much of his life teaching English and Drama, Ian Whybrow is now a bestselling author. Among his most popular characters are the hugely successful Harry and the Bucketful of Dinosaurs and the much-loved Little Wolf. Ian lives in Harrow, Middlesex. Adrian Reynolds is a hugely talented illustrator who has worked on many picture books, including the wonderful Harry stories and the Red House prize winner, The Big Red Bath by Julia Jarman. Adrian lives in Cambridge.