Stuart Gibbs is the author of five New York Times bestselling series: Spy School, FunJungle, Moon Base Alpha, Charlie Thorne, and Once Upon a Tim—as well as the new nonfiction series Spy School Secret Files. He has written screenplays, worked on a whole bunch of animated films, developed TV shows, been a newspaper columnist, and researched capybaras. Stuart lives with his family in Los Angeles. You can learn more about what he’s up to at StuartGibbs.com.

Ward Jenkins is and illustrator and animator from Atlanta, Georgia. He’s illustrated several picture books, including Chicks Run Wild, as well as the Good Crooks chapter book series. Ward lives with his wife and two kids and hasn’t shaved his beard since 2010. Find him online at @WardOMatic.