The document provides an overview of the horror genre, including:
1) A brief history of horror films from the late 19th century to modern times, noting increasing budgets and popularity in the 1960s with films like The Exorcist.
2) Descriptions of common horror subgenres like psychological horror, body horror, and slasher films.
3) Conventions of the genre including character archetypes, common settings, narrative structures, lighting techniques, and iconography.
4) Details on the target audience, popularity trends, and some influential directors and actors in the horror genre.