Four friends. Chasing ghosts. Twenty-four hours on the clock. Their only hope—a wretched underworld where The Gravedigger is king.

Bram loves an easy fix. So when the family ghost tour needs some ghosts, he figures, why not fake some? It’s the perfect ruse to save the business. They won’t have to move away. But his hoax royally backfires. Legendary supernatural debunker, Cressida Strange, threatens to expose the fraud live on Halloween night. Only genuine supernatural footage will get them out of this mess. Bram drags his friends down to the forbidden part of the catacombs, where no one living has walked for a quarter of a century. There’s got to be some ghosts down there, right?