The Grimmerie (a variation on the wor Grimoire) is a fictional book of spells found in Gregory Maguire's novel Wicked: The Life and Times of the Wicked Witch of the West, as well as the Broadway musical Wicked (based on Maguire's novel). The Grimmerie is also the title of a behind-the-scenes book about the musical, published in 2005 (ISBN 1401308201).