The Spiderwick Chronicles is a series of children's books by Tony DiTerlizzi and Holly Black. The books chronicle the adventures of the Grace children, twins Simon and Jared and their older sister Mallory, after they move into the eponymous Spiderwick Estate and discover a world of faeries that they never knew existed.
Since the publishing of the first novel, The Field Guide, in 2003, four more books in the series have been published, along with several accompanying books. A feature film adaptation, also titled The Spiderwick Chronicles, was produced by Nickelodeon Movies and premiered on February 14, 2008, and an accompanying video game was released in early February.
The first book in the series opens in New England, United States, where nine-year-old twins Jared and Simon and their thirteen-year-old sister Mallory move to the decrepit Spiderwick Estate with their mother, Helen. They discover a secret library hidden in the house, and in the library they find Arthur Spiderwick's Field Guide to the Fantastical World Around You, a book full of information on faeries.