Internationally renowned author Davide Cali is a Swiss-born Italian writer of picture books and graphic novels, primarily for children and young adults. His work has been published in 25 countries and translated into many languages. He lives in Italy. Sébastien Mourrain is the illustrator of more than 40 picture books and documentaries, published by Gallimard, Seuil, Bayard, and Milan, among others. He lives in Lyon, France.