Harper Beaumont runs illegal midnight ghost tours through Ravenwood Fables?her family's rotting, folklore-themed Appalachian amusement park?monetizing gruesome legends and the unsolved murder of a local man to pay for her younger sister's meds. But the fragile peace shatters when her tyrannical grandmother violently vanishes from a locked study, leaving behind a single clue: a bloody scrap of the murdered man's jacket.

Determined to uncover the truth before her sister's fractured mind breaks completely, Harper strikes an uneasy alliance with Theo, the park's brooding caretaker?who may be hiding secrets of his own. Together, they descend into the condemned underbelly of the park, only to realize they aren't alone in the dark. Someone?or something?wearing the mask of the park's most terrifying monster is stalking them through the decaying attractions, protecting a century-old secret that could destroy the Beaumont name forever.

To escape the valley alive, Harper must survive a flesh-and-blood nightmare and unearth the horrifying truth at the center of her family's cursed park ... or become the next fable buried beneath the mountain soil.