Tracey Turner has written more than seventy books, most of them for children, on subjects including inventions, the universe, famous writers, rude words and deadly perils. Many have sold foreign rights all over the world, and some have become best sellers. She is also an editor, and commissioned and edited the Horrible Histories series for many years. She lives in Bath, UK, with Tom and their son, Toby.

Åsa Gilland is a Swedish illustrator who loves all things retro, quirky imagery and folk art themes. She studied interior design at Accademia Italiana Moda and has twenty years of experience in surface design and illustration. Åsa produces art for stationery, textiles, home decor and the gift market.