This document outlines a film pitch for a psychological thriller about a group of 4 people who get stuck in an elevator between floors. The lights begin to flicker and each time they go out, one of the people dies. It will be revealed that one of the people trapped is the killer. The document discusses the setting, genre, conventions, characters, narrative, visual style, target audience, and unique selling points of the proposed film. The goal is to create tension by trapping the characters in a confined metal box with an unknown killer.