Copper Inskeep holds Windydown Vale's deepest and darkest secret: He is the ghoul who haunts the Vale, donning a gruesome costume not only to scare travelers away from the dangers of the surrounding swamps, but also to keep them from discovering Windydown Vale's best-kept secret. When a terrified girl claims she and her father were attacked by a creature, one that could not have been Copper, her accusation threatens Copper's secret, his closest friendship, and the fate of all Windydown.