The dark was cold and heavy. I woke up on hard stone, my chest burning as I breathed in damp dirt and old dust. Far above me, floorboards groaned as the angry ghost walked across the main hall.

I was trapped under the house.

I reached into my coat and felt the brass key from the market. It was glowing hot against my hand.

"You should not have brought it back," her voice rasped inside my head.

A pale blue light showed the ghost floating above the ground. Her pale face looked terrified as her bright eyes locked onto the key.

"That key kept the deep doors locked," she whispered. "By bringing it back, you unlocked what lies below."

From the dark tunnel behind her, a low, scary growl echoed through the rocks.