M. T. Anderson is the author of Feed, a National Book Award Finalist; the National Book Award winner The Astonishing Life of Octavian Nothing, Traitor to the Nation, Volume I: The Pox Party and Volume II: The Kingdom on the Waves, which were both Michael L. Printz Honor Books; Symphony for the City of the Dead; Yvain: The Night of the Lion; Landscape with Invisible Hand; and many other books for children and young adults, including The Assassination of Brangwain Spurge, cocreated with Eugene Yelchin, which was a National Book Award Finalist. M. T. Anderson lives near Boston, Massachusetts.

Junyi Wu is the illustrator of several books, including Two Bicycles in Beijing by Teresa Robeson; Beatrix Potter, Scientist by Lindsay H. Metcalf; and the Newbery Honor Book Scary Stories for Young Foxes by Christian McKay Heidicker. Junyi Wu is a graduate of ArtCenter College of Design and is based in Orange County, California.