Lisa Graff is the author of Absolutely Almost, A Tangle of Knots, Double Dog Dare, Umbrella Summer, The Life and Crimes of Bernetta Wallflower, The Thing About Georgie and Sophie Simon Solves Them All. A former children's book editor, she's now a full-time writer and adjunct professor. Originally from California, she lived for many years in New York City and now makes her home just outside of Philadelphia. You can visit her online at www.lisagraff.com.