This document discusses common elements of horror films including typical synopses involving revenge, hauntings, demons, and serial killers. It notes that horror films often take place in abandoned buildings at night and feature props like weapons and masks. Common characters include victims, villains like serial killers, "stupid" teenagers, and possessed children. The camera work aims to induce fear through techniques like high and low angles, point-of-view shots, handheld footage, and disturbing sounds.