The Gnome King’s Shadow in Oz is a modern Oz novel by Gilbert M. Sprague with illustrations by Donald Abbott. It was published on August 28th 1992.
This riotous, pun-filled adventure begins near the end of Baum’s third Oz book, Ozma of Oz, when the wicked Nome King meets Billina -- the Royal Hen of Oz. The Nome King is so frightened by Billina that he literally falls to pieces and his shadow escapes. Vowing to get even with that dratted hen, the Nome King's shadow -- who names himself Shady -- sets off for the Emerald City to wreak havoc on our old friends the Scarecrow, Tin Woodman, Cowardly Lion, Jack Pumpkinhead, Hungry Tiger, Ozma and Billina. Puns, peril and some wild, wooly magic make for a hilarious adventure.