A horror ending rarely begins at the end of a draft. It takes shape much earlier, usually in places that do not look like endings at all. It shows up in the moment a character notices a change in someone they love and chooses to explain it away instead of confronting it. It sits in the way they keep watching footage, replaying it, convincing themselves that the next viewing will make it clearer. It appears when they follow a rule they do not understand simply because breaking it feels worse, even before they know why. As a writer, you should be aware of these threads throughout the writing process. For a reader or viewer, these instances often pass without much attention. The story still feels active, the tension building, with their importance becoming clear in hindsight. Looking back, the audience can see where the person at the centre faces a limiting event. They can no longer continue as they have been. Once that limit is established, the direction of the conclusion begins to take shape.
