The document provides an analysis of the codes and conventions used in horror movie trailers, examining the trailers for three films: Dead Snow (2009), The Texas Chainsaw Massacre (1974), and Scream (1996). It discusses the use of lighting, music, plot details, characterization, and other elements in constructing an effective trailer that intrigues audiences while avoiding spoilers. Key aspects analyzed include the emphasis on tension, mystery, and cliffhangers common to the genre.