The document provides an analysis of trailers for the films Split, The Babadook, and Us. For Split, it summarizes that the trailer effectively builds suspense through its use of music and shots that put the viewer in the scene. For The Babadook, it notes the trailer uses gloomy lighting, close-ups, and unnerving sounds to create tension. For Us, it summarizes that the trailer contrasts warm beach shots with ominous night shots and effectively cuts between characters and their doppelgängers to depict the threat.