Amanda McCardie has a degree in English and has worked as an editor, nursery assistant and teacher. This is her second title for Walker: her first was the critically acclaimed A Book of Feelings.

Her other books include The Frog Ballet (which won a UK Reading Association Award for a substantial contribution to children's literacy) and Davy and Snake.

She has studied infant observation and child development at the Tavistock and Portman NHS Trust in London. Amanda lives with her family in London, N1.

Salvatore Rubbino's first book for children, A Walk in New York, was shortlisted for the V&A Illustration Awards; his second, A Walk in London, won an SLA Information Book Award; his third, Just Ducks! (written by Nicola Davies) was shortlisted for the Kate Greenaway Medal; and his fourth, A Walk in Paris, won the IBW children's book award. Salvatore teaches on the MA Children's Book Illustration course at Cambridge School of Art and at Southampton Solent University. He lives in London, E15.