Hiawyn Oram has been writing children's books for more than 20 years and has more than 90 books published to date, including the picture books Angry Arthur, The Good Mood Hunt and Filbert, the Good Little Fiend, illustrated by Jimmy Liao. She has won the Japanese Picture Book Award and the Prix du Livre Culturel. She lives in West London. Find her on Twitter as @hiawynoram. Birgitta Sif was born in Iceland and lived in and around Scandinavia and America while growing up. She is the illustrator of Miss Hazeltine's Home for Shy and Fearful Cats, written by Alicia Potter, as well as the author and illustrator of the Kate Greenaway shortlisted picture book, Oliver, and Frances Dean Who Loved To Dance and Dance, both of which were endorsed by Amnesty International. Birgitta lives with her family in Cambridge. Find her online at www.birgittasif.com and on Twitter and Instagram as @birgittasif.