The slasher genre is a subgenre of horror films characterized by a killer stalking and murdering a group of people, often teenagers. These films typically feature a masked or disguised antagonist, a high body count, and graphic violence. Common themes include isolation, fear, and the consequences of moral transgressions. Iconic examples of the slasher genre include movies like Halloween, Friday the 13th, and A Nightmare on Elm Street. The genre gained popularity in the late 1970s and 1980s, influencing countless films and spawning numerous sequels and remakes. Slasher films often follow a formulaic structure, making them easily recognizable to audiences.