Noir fiction is a genre characterized by its dark themes, moral ambiguity, and complex characters. It often features a cynical worldview, where protagonists are flawed and face difficult choices. The stories typically revolve around crime, betrayal, and the darker aspects of human nature, often set in urban environments. The genre emerged in the early 20th century, influenced by hardboiled detective fiction and German Expressionism. Notable authors include Dashiell Hammett and Raymond Chandler, whose works often highlight the struggles of individuals against corrupt systems. Noir fiction has also influenced film, leading to the development of the film noir style in cinema.