Characteristics
The mystery film genre was in vogue and early information on Dracula being promoted as mystery film was common, despite the novel, play and film's story relying on the supernatural. Newman discussed the genre in British Film Institute's Companion to Horror where he noted that Horror films in the 1930s were easy to identify, but following that decade "the more blurred distinctions become, and horror becomes less like a discrete genre than an effect which can be deployed within any number of narrative settings or narratives patterns". In the 1940s, the horror film was viewed in different terms. Critic Siegfried Kracauer included The Lost Weekend among films described as "terror films" along with Shadow of a Doubt, The Dark Corner (1946), Gaslight (1944), Shock (1946), The Spiral Staircase (1946), The Stranger (1946) Spellbound (1945) while two years earlier, the New York Times described a new cycle of "horror" productions included Gaslight, The Woman in the Window (1944), Dark Waters (1944), Laura and Phantom Lady (1944).Mark Jancovich wrote in The Shifting Definitions of Genre: Essays on Labeling Films, Television Shows and Media (2008) that the term was virtually synonymous with mystery as a generic term, not being limited to films concerned with the strange, eerie and uncanny. Various writings on genre from Altman, Lawrence Alloway (Violent America: The Movies 1946-1964 (1971)) and Peter Hutchings (Approaches to Popular Film (1995)) implied it easier to view films as cycles opposed to genres, suggesting the slasher film viewed as a cycle would place it in terms of how the film industry was economically and production wise, the personnel involved in their respective eras, and how the films were marketed exhibited and distributed.Mark Jancovich in an essay declared that "there is no simple 'collective belief' as to what constitutes the horror genre" between both fans and critics of the genre. Jancovich found that disagreements existed from audiences who wanted to distinguish themselves. This ranged from fans of different genres who may view a film like Alien (1979) as belonging to science fiction, and horror fan bases dismissing it as being inauthentic to either genre.Further debates exist among fans of the genre with personal definitions of "true" horror films, such as fans who embrace cult figures like Freddy Kruger of the A Nightmare on Elm Street series, while others disassociate themselves from characters and series and focusing on genre auteur directors like Dario Argento, while others fans would deem Argento's films as too mainstream, having preferences more underground films. Andrew Tudor wrote in Monsters and Mad Scientists: A Cultural History of the Horror Movie suggested that "Genre is what we collectively believe it to be" In addition to these perspectives, Rhodes emphasizes the evolution of the horror genre through various cultural and historical contexts. He discusses the impact of socio-political factors on the genre, such as the influence of World War I and II, the Great Depression, and the Cold War, which shaped the themes and narratives of horror films. For instance, the anxieties of the post-war era manifested in horror films as fears of invasion, contamination, and the unknown, reflecting the collective psyche of the time. Rhodes also highlights the significance of technological advancements, such as the advent of sound in cinema, which revolutionized the horror genre by enhancing its ability to evoke fear and suspense through auditory effects. Moreover, the horror genre's flexibility and adaptability are crucial to its enduring popularity. As Rhodes notes, the genre continuously evolves, incorporating elements from other genres and responding to contemporary societal fears and anxieties. This adaptability is evident in the various sub-genres that have emerged over the years, such as psychological horror, body horror, and found footage horror, each addressing different aspects of human fear and the unknown. Rhodes also explores the role of censorship and regulation in shaping the horror genre. The enforcement of the Hays Code in the 1930s and subsequent rating systems influenced the depiction of violence and sexuality in horror films. This regulation often pushed filmmakers to find creative ways to imply horror elements without explicit content, leading to a focus on atmosphere, suggestion, and psychological horror. The relaxation of censorship in the late 20th century allowed for more graphic and explicit horror, contributing to the emergence of sub-genres like splatter films
Music
Music is a key component of horror films. In Music in the Horror Film (2010), Lerner writes "music in horror film frequently makes us feel threatened and uncomfortable" and intends to intensify the atmosphere created in imagery and themes. Dissonance, atonality and experiments with timbre are typical characteristics used by composers in horror film music.
In the book Dark Dreams, author Charles Derry conceived horror films as focusing on three broad themes: the horror of personality, horror of Armageddon and the horror of the demonic.