Katie has been writing non-fiction children's books for almost half her life and loves questioning the world from a child's point of view. She's developed some of Usborne's bestselling series, including the See Inside books and Lift-the-flap Questions & Answers.

When she's not writing, she likes drinking coffee, walking on the moors and playing competitive board games with her children.,

Alida Massari is an Italian artist specializing in illustration for children. Born in Rome where she studied illustration at the European Institute of Design, she finds inspiration for her work from folk traditions and ancient art. She has illustrated many books, collaborating with Italian, English, German, and American publishers. She lives in Rome, Italy.