The document analyzes conventions used in horror movie trailers like Insidious. It discusses how the trailer for Insidious uses lighting, music, camera work, and imagery to create fear, suspense, and mystery for the audience. Fast-paced editing, ominous music, and point-of-view shots are employed to build tension. Mysterious images like a shadowy figure outside the house leave the threat unseen, while a child hiding behind a door builds an unseen threat.