This document discusses the horror-thriller film subgenre. It describes how these films depict a growing, usually unknown menace rather than supernatural elements. Additionally, it explains that horror films are designed to frighten and alarm audiences by invoking our deepest fears in a terrifying climax, while also captivating and entertaining. Finally, it states that horror films center around the dark, forbidden, and strange aspects of life that deal with primal human fears surrounding nightmares, vulnerability, death, and loss of identity.