Blood Simple is a 1984 American neo-noir crime film written, edited, produced, and directed by Joel and Ethan Coen. It was the directorial debut of the Coens and the first major film of cinematographer Barry Sonnenfeld, who later became a noted director, as well as the feature-film debut of Joel Coen's wife Frances McDormand, who subsequently starred in many of his features.
The film's title derives from the Dashiell Hammett novel Red Harvest (1929), in which the term "blood simple" describes the addled, fearful mindset of people after prolonged immersion in violent situations.
In 2001, a director's cut was released. It ranked number 98 on AFI's 100 Years...100 Thrills. The film also placed 73rd on Bravo's 100 Scariest Movie Moments.