Josh Allen checks under his bed before switching off the light each night. During the day, he teaches creative writing and literature at Brigham Young University-Idaho. His debut book for young readers, Out to Get You, received two starred reviews and was a Junior Library Guild selection. He lives in Idaho with his family.

Sarah Coleman was an early pioneer of hand lettering and has illustrated covers for many renowned books, including the 50th anniversary edition of To Kill a Mockingbird and Newbery Honor-winner Wolf Hollow. Her design clients range from Coca Cola and Starbucks to The New York Times. She lives in the UK.