Horror films commonly use certain conventions to create tension and scare audiences. Low-key lighting is used to make scenes darker and more sinister. Camera work like low and high angles show a villain's power or make audiences feel nervous. Dark colors like black and blue are used to convey isolation, fear, and danger. Common props include knives and axes that can inflict pain. Character archetypes include the "final girl" who survives and a psychotic villain with a tragic backstory. Narratives often follow Todorov's structure of disrupting an initial equilibrium. Settings in abandoned or isolated places at night are most frightening.