The document discusses various horror film subgenres and their common conventions. It analyzes supernatural, psychological, slasher, possession and gothic subgenres. For each, it identifies common narrative structures, character tropes, locations, and visual/audio techniques. For example, it notes possession films typically feature religious imagery and are set in isolated places with dark histories. The author's group chose the possession subgenre for their film due to its complexity, relevance and opportunities for creative expression.