Barry Loser and the Case of the Crumpled Carton : Paperback : HarperCollins Publishers : 9781405268035 : 1405268034 : 01 Sep 2015 : The brilliant Roald Dahl Funny Prize winning BARRY LOSER series. Perfect for readers aged 7-10 years old and fans of Diary of a Wimpy Kid, Tom Gates and Dennis the Menace. \'My mum and dad are so busy looking after my brand new baby brother, Desmond Loser the Second, that sometimes I wonder if they even know I exist.\'