Nancy Krulik is the author of more than 150 books for children and young adults, including three New York Times best sellers. She lives in New York City with her husband, composer Daniel Burwasser, and their children, Amanda and Ian. When she's not busy writing the Katie Kazoo, Switcheroo series, Nancy loves swimming, reading, and going to the movies.
John & Wendy have illustrated all of the Katie Kazoo books, but when they're not busy drawing Katie and her friends, they like to paint, take photographs, travel, and play music in their rock'n'roll band. They live and work in Brooklyn, New York.