Mac Barnett is the author of several books for children, including Extra Yarn, illustrated by Jon Klassen, a Caldecott Honor Book and winner of a Boston Globe-Horn Book Award, The Wolf, the Duck, and the Mouse, a New York Times bestseller, and Sam and Dave Dig a Hole, a Caldecott Honor Book and winner of the E. B. White Read Aloud Award. He is the co-author, with Jory John, of the New York Times best-selling series The Terrible Two. Recently, he’s released Mac Undercover (Mac B., Kid Spy #1). Mac Barnett lives in California. Visit him online at macbarnett.com.