Kate Coombs is the author of The Secret-Keeper. She has worked as an editor and as an English composition teacher at various colleges in Chicago and Los Angeles. She currently teaches in Los Angeles, where she lives.John Nickle is the illustrator of Things That Are Most in the World and Never Take a Giraffe to the Movies, both written by Judi Barrett. He is also the author and illustrator of Alphabet Explosion and The Ant Bully. He lives in Brooklyn, New York.