This document discusses the key elements and characteristics of psychological thriller films. It begins by explaining that psychological thrillers focus heavily on the characters and their psychological issues or problems. It then provides examples of common psychological conditions seen in characters, such as split personalities, serial killers, stalkers, schizophrenia, and memory loss. The document also notes that psychological thrillers typically receive ratings of 15+ or 18+ due to their inclusion of violence, horror aspects, and depiction of psychological issues. It aims to scare audiences while not being overly graphic and keeps viewers on the edge of their seats with unexpected twists relating to the unpredictable actions of characters dealing with psychological problems.