Horror movies are known for creating anxiety-provoking circumstances and observing characters react to them. Most works in the genre operate with a similar structure, where the setup is the introduction of the concept or the situation which will push the characters to the brink. The second act then follows that up by ramping up the stakes, often due to circumstances, and very commonly also due to bad decisions taken by the characters. The final act relieves tension, either through triumph or tragedy, and follows the maddening chaos to a conclusion.
