Holly's first novel, a suburban fantasy entitled Tithe: A Modern Faerie Tale, received starred reviews in Publisher's Weekly and Kirkus Reviews. Booklist called Tithe "dark, edgy, beautifully written, and compulsively readable." A finalist for the Mythopoeic Award, Tithe was listed on the ALA's Best Books for Young Adults and the New York Public Library's "Best 2002 Books for the Teenage."

Holly then collaborated with artist and writer Tony DiTerlizzi on the New York Times bestselling The Spiderwick Chronicles. This five-book series has been called a "vintage Victorian fantasy" by the New York Post and Time Magazine reported that "the books wallow in their dusty Olde Worlde charm." Also receiving starred reviews in Publisher's Weekly and Kirkus Reviews, the Spiderwick Chronicles have been translated into 27 languages worldwide.

One of her stories, "The Night Market," was included in The Faery Reel, collection of faery stories for teenagers edited by Ellen Datlow and Terri Windling. She is working on a sort-of sequel to Tithe, entitled Valiant, set in and under New York City.

Holly was born in New Jersey and attended the College of New Jersey and Rutgers University. Before writing became a full-time occupation, she was a production editor for medical journals and a medical market researcher. She is an avid collector of the folklore and fairy tale volumes that inform her work.

To learn more about Holly’s work, visit her website.