Kjartan Poskitt's books have been translated into thirty languages and include the Murderous Maths series, as well as books on space, puzzles, and magic. He has also written funny children's fiction including Urgum the Axeman, Borgon the Axeboy and the Whispering Temple, the award-winning Agatha Parrot series, and The Runaway Pea. Alex Willmore is an illustrator/designer whose passion lies in character design. Born in Northampton, England, Alex has been drawing characters since the moment he first picked up a pencil. A love of animals and picture books have inspired him and led to a career in illustration. Alex has been twice nominated for the Sheffield Children's Book Award, was long-listed for the Kate Greenaway Medal 2020, and is currently nominated for The Federation of Children's Book Groups Children's Book Award 2020.