Júlia Sardà is a Spanish artist who has illustrated many books for children, including Mary Who Wrote Frankenstein by Linda Bailey, The Liszts by Kyo Maclear, and a number of classics such as Alice in Wonderland, The Wonderful Wizard of Oz and Charlie and the Chocolate Factory. She has illustrated The Wolf's Secret by Nicolas Digard and Myriam Dahman, which won Foyles Children's Book of the Year 2020. Her work has been published around the world in many languages. The Queen in the Cave is her debut to the Walker list and the first book she has both written and illustrated. She lives in Barcelona. You can find her on Instagram @juliasardaportabella.