This document defines the genre of horror and provides examples of key components and conventions in horror films. It discusses how horror aims to elicit intense fear in audiences by preying on primal fears. Successful horror films typically feature a demon/monster and create fear through dark and isolated settings, suspenseful music, and twists that leave audiences feeling unsettled. Common stereotypes include female victims, heroic characters trying to save others, protagonists who are often the smartest and survive, and antagonists who are the source of evil. To be successful, a horror film opening should include stereotypical characters and identify the genre through its use of sound, lighting, setting and a negative atmosphere that conveys danger.