The "Lost Chapters" are a complement to The Spiderwick Chronicles written by Holly Black and illustrated by Tony DiTerlizzi. They were first released in the U.S. from January 1 to March 1, 2008, featuring one book in every package of the cereal company Lucky Charms. The Chapters work as background stories for The Spiderwick Chronicles Book 2, and the release were tied to the cinematic release of The Spiderwick Chronicles movie in February.