Nubilfilms _top_ -

Elsie looks at the curtain in the library. It ripples.

ELSIE > Show yourself!

A text card appears on the silent footage: "THE AUDIENCE IS THE FINAL GIRL." nubilfilms

This isn't a set. It’s a killing floor. Tiles that can be hosed down. Drains in the floor. And on the walls—storyboards. Elsie looks at the curtain in the library

To help you further, could you clarify: