Claire Freedman is the internationally bestselling author of over fifty books for children. Claire is probably best-known for her award-winning Aliens Love Underpants picture book series. There's A Spider In This Book was her first picture book with Macmillan. Claire lives by the coast in Essex with her husband and lots and lots of books ¿ but thankfully no hairy spiders!

Mike Byrne grew up on the Wirral near Liverpool before moving to Wales to study illustrations at Glyndwr University. He began his career as a designer for a greetings card company and then became a studio manager for a licensed stationery designer, before leaving to fulfill his dream of illustrating children's books. Mike now lives in Surrey with his wife, cat and two sons, and spends his days doodling and drawing illustrations fuelled only by tea and biscuits. Mike illustrated the bestselling Jack's Mega Machines series and the hugely successful Sproutzilla v. Christmas, which was his first book for Macmillan.