Horror films aim to frighten audiences through depicting death, villains and the unknown. Common sub-genres include slashers, where a killer stalks victims one by one; and zombies, where the undead feast on human flesh. Effective techniques include jump scares, ominous music and lighting, graphic violence, and following victims as threats loom. Locations often feature the woods or haunted houses to isolate characters. Overall, horror films utilize fear-inducing tropes and conventional story structures to entertain through fear.