Gripping, just gripping. Felt chills when she returned to the basement, especially here:

"Straight ahead," he said, and his words slow now and precise. "Thaaaat's it, little Goldilocks. Come down into the dark."

then, just as I was thinking it:

"Dark. Basement. Another ruddy basement. Right where you left me, Buffy."

ooh. You are goood.