The document discusses various horror subgenres and their conventions. It analyzes the conventions of supernatural, psychological, slasher, possession and gothic subgenres. Key conventions discussed include common settings like homes and isolated locations, characters like the final girl in slashers and themes involving curses or haunted places. The author and their group chose the possession subgenre for their film due to its interesting narrative possibilities and relevance to modern audiences. They believe it will allow them to creatively challenge conventions and engage a sophisticated audience.