Susanna Isern is a writer, psychologist and mother of three. She is the author of over 60 children's books, which are available all over the world and have been translated into over a dozen languages. Susanna lives in Santander, Spain.

Mariana Ruiz Johnson is an award-winning children's book illustrator and author. She likes to explore the narrative power of illustration and the relationship between images and words. Using vibrant palettes and different patterns and textures, she combines traditional techniques and digital media. Mariana lives in the outskirts of Buenos Aires, Argentina with her husband and two children.