Roger Mello has illustrated over 100 titles - 22 of which he also wrote - and his unique style and adroit sense of color continues to push the boundaries of children's book illustration. Rather than relying on written narrative to tell the story, Mello invites his young readers to fill the gaps with imagination. Mello has won numerous awards for writing and illustrating, including three of IBBY's Luis Jardim Awards, the Best Children's Book 2002 International Award, and the 2014 Hans Christian Andersen Award. In 2018, You Can't Be Too Careful! was named a Batchelder Honor Book by the American Library Association. Charcoal Boys was published by Elsewhere Editions in 2019 and was named a USBBY 2020 Outstanding International Book. And in 2022, João by a Thread also received a Batchelder Honor.


Translator Daniel Hahn is the author of a number of works of nonfiction, including The Tower Menagerie. He is one of the editors of The Ultimate Book Guide, a series of reading guides for children and teenagers. His translation of The Book of Chameleons by José Eduardo Agualusa won the Independent Foreign Fiction Prize in 2007, his translation of Agualusa's A General Theory of Oblivion was shortlisted for the Man Booker International Prize in 2016. He has translated the work of Philippe Claudel, María Dueñas, José Saramago, Eduardo Halfon, and others. He has collaborated with Roger Mello on three transcendent picture books: You Can't Be Too Careful!, Charcoal Boys, and João by a Thread.