Holly Black is the author of bestselling dark contemporary fantasy for kids and teens. Her books include Tithe: A Modern Faerie Tale, two related novels, Valiant and the New York Times bestseller Ironside, the Spiderwick Chronicles (with artist Tony DiTerlizzi), the short story collection, The Poison Eaters and Other Stories, and a graphic novel series, The Good Neighbors (with artist Ted Naifeh). Holly has co-edited three anthologies: Geektastic (with Cecil Castellucci), Zombies vs. Unicorns (with Justine Larbalestier), and Welcome to Bordertown (with Ellen Kushner).

She recently started a new series, The Curse Workers. The first novel is White Cat and the second Red Glove. She and her husband, Theo, live in Amherst, Massachusetts.