Husband and wife team Mal Peet (1947–2015) and Elspeth Graham wrote four books together: Cloud Tea Monkeys, Mysterious Traveler, Night Sky Dragons and The Treasure of Pirate Frank. Mal Peet also authored several YA novels, including the Carnegie Medal–winning novel Tamar, the Boston Globe–Horn Book Honor BookLife: An Exploded Diagram and three Paul Faustino novels: Keeper, The Penalty, and Exposure.

Juan Wijngaard has illustrated more than thirty books for children, including Shakespeare’s Globe: An Interactive Pop-up Theatre and the Kate Greenaway Medal–winning Sir Gawain and the Loathly Lady. He lives in New Mexico.