The document discusses horror movie conventions across several subgenres, including slashers like Friday the 13th, ghosts/spirits like The Ring, home invasions like The Strangers, supernatural films like The Conjuring, giant monster movies like The Mist, virus outbreaks like 28 Days Later, and comedy horrors like Leprechaun. Key conventions mentioned include last girl tropes, chase sequences, investigations of past events, anonymous antagonists, isolated settings, and balancing humor with scares. Examples from trailers and clips are provided to illustrate common techniques.