Brad Meltzer is the New York Times bestselling author of Heroes for My Son, Heroes for My Daughter, The Lincoln Conspiracy, and a number of suspense novels like The Lightning Rod. He also helped find the missing 9/11 flag with his History Channel television show Brad Meltzer's Lost History. He lives in Florida with his wife and their three children. (And did you know that a picture of Brad is hidden in every book in this series?)

Christopher Eliopoulos began his illustration career at Marvel Comics, and has worked on thousands of comics, including his own Cow Boy and Franklin Richards: Son of a Genius. He is the author and illustrator of the picture books The Yawns Are Coming! and The Giggles Are Coming! and the graphic novels Cosmic Commandos and Monster Mayhem. He lives in New Jersey with his wife and their college-graduate twin sons (who also make an appearance in each Ordinary People Change the World book).