https://www.realnancykrulik.com/

Nancy Krulik is the author of more than 200 books for children and young adults, including three New York Times bestsellers. 

She is best known, however, for being the author and creator of the Katie Kazoo, Switcheroo series. Nancy currently lives in Manhattan with her husband, composer Daniel Burwasser, their two children, Amanda and Ian, and a crazed cocker spaniel named Pepper.