Michael Lawrence trained as a graphic designer, before becoming a freelance photographer for clients including the Financial Times and the BBC. He has written many books for children including The Poltergoose and The Killer Underpants. Robert Ingpen is an established Australian illustrator and author. He studied art at the Royal Melbourne Institute of Technology and has written and illustrated more than 70 publications including children's books, fantasy and history. In 1986 he was the first Australian to win the coveted international Hans Christian Andersen Medal for Children's Book Illustration.