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Smriti Halls is an award-winning, internationally bestselling children's author whose books include Rain Before Rainbows and Peace on Earth (illustrated by David Litchfield), and I'm Sticking With You (illustrated by Steve Small). Smriti is published in more than 30 languages. She has been Book Trust's Writer in Residence and has worked across children's publishing and television as a writer and commissioning editor. Smriti lives in London and you can find her online at smriti.co.uk, on Twitter as @smritiph and on Instagram as @smriti_halls_author.

Marta Altés studied graphic design and worked in Barcelona before completing the MA in Children's Book Illustration in Cambridge. She has illustrated over 20 picture books and has been shortlisted for the Waterstones Children's Book Prize with No!, and nominated for the CILIP Kate Greenaway Medal with I am an Artist. Marta lives in London and you can find her on marta-alttes.com and on Instagram and Twitter as @martaltes.