Film noir is a subgenre of crime drama that is notable for its expressionist cinematography, hardboiled fiction narratives, and themes pertaining to loneliness, despair, and nihilism. The classic film noir period ran from the early 1940s until the late 1950s. Despite being hampered by the Production Code, film noir emerged as the Golden Era's darkest genre, both aesthetically and thematically.
Source：https://www.cbr.com/dangerous-femme-fatale-film-noir/
