The document discusses the thriller genre, including its history and key developments. It traces the genre back to Alfred Hitchcock's films in the 1920s-1970s and highlights how thrillers took off in the 1950s with films like Niagara. The 1990s saw the rise of the Scream series directed by Wes Craven. The document also lists 16 subgenres of thrillers and contrasts thrillers with horror films. It provides examples of key thriller films, stars, directors, and conventions.