The purpose of the horror genre is to elicit fear, panic, and alarm in viewers by putting them on the edge of their seats wondering what will happen next. Sound is particularly effective at creating a sense of fear through sharp, high-pitched noises. Horror films often center around some change in circumstances that sets the story in motion, such as a person moving to a new neighborhood. The Purge is used as an example of how one event, such as all laws being suspended for 12 hours, can lead to generic horror conventions like death and violence. Viewers enjoy horror films because they like seeing the protagonist succeed against tough odds while experiencing fear and panic along with the characters. Descent shows a group endangered by blind,