This document discusses various sub-genres of horror films. It outlines the key conventions and examples of supernatural, slasher, and psychological horror sub-genres. In supernatural films, evil spirits and possessions are common threats. Slasher films feature psychopathic killers targeting teenagers. Psychological horrors aim to undermine the audience's trust through twisted characters and plot twists. Key conventions include isolated settings, signature weapons, final girls, and graphic depictions of violence.