This document outlines common conventions and tropes found in horror films, such as haunted house movies like Insidious and Mama. It discusses plot elements, themes, character types, settings, music and sounds, camera techniques, special effects, and narrative structures that are typically seen. These include families moving into haunted houses, revelations of horror through jump scares, use of priests or exorcists, themes of ghosts, darkness and possession, victimized families with secret histories, isolated suburban or forest settings at night, atmospheric music with loud sounds, first-person camera views and zooms, use of blood and CGI effects, and narratives with gradual buildup of tension and fear.