The Spiderwick Chronicles is a series of children's books by Tony DiTerlizzi and Holly Black. They chronicle the adventures of the Grace children, twins Simon and Jared and their older sister Mallory, after they move into the Spiderwick Estate and discover a world of fairies that they never knew existed. The first book, The Field Guide, was published in 2003 and then followed by The Seeing Stone (2003), Lucinda's Secret (2003), The Ironwood Tree (2004), and The Wrath of Mulgarath (2004). Several companion books have been published including Arthur Spiderwick's Field Guide to the Fantastical World Around You (2005), Notebook for Fantastical Observations (2005), and Care and Feeding of Sprites (2006). A second series, entitled Beyond the Spiderwick Chronicles includes The Nixie's Song (2007), A Giant Problem (2008), and The Wyrm King (2009).