Psychological thrillers focus on the unstable mental states of characters and incorporate elements of mystery, drama, action and horror. The settings can be everyday places that emphasize realism and psychological torment. Main characters include victims in troubled relationships, police officers trying to help victims, and psychotic individuals with dual personalities who are often the killers. Narratives typically involve someone unaware of their dual nature hurting others due to past trauma before realizing their identity and ending up dead or institutionalized. Iconography includes confined spaces, low lighting, elements of surprise and draining sounds to unsettle audiences. Cinematography uses techniques like low angles, close-ups and zooms to convey emotions and imply danger.