High Quality Content by WIKIPEDIA articles! A slasher film is a subgenre of horror film, and at times thriller, typically involving a mysterious psychopathic killer stalking and killing a sequence of victims usually in a graphically violent manner, often with a cutting tool such as a knife or axe. Although the term "slasher" may be used as a generic term for any horror movie involving graphic acts of murder, the slasher as a genre has its own set of characteristics which set it apart from related genres like the splatter film.