Katherine Hannigan is a celebrated author known for her contributions to children's and young adults' literature. Her first novel, Ida B . . . and Her Plans to Maximize Fun, Avoid Disaster, and (Possibly) Save the World, was a New York Times bestseller, a Book Sense bestseller, and received the Parents' Choice Gold Award. This novel was featured on more than twenty-five state award lists.

Katherine resides near a meadow in northeastern Iowa, where she shares her space with several wild rabbits, providing her with tranquility and inspiration for her writing.