A drifter with no name and no past, driven purely by desire, is convinced by a beautiful woman to murder her husband. A hard-drinking detective down on his luck becomes involved with a gang of criminals in pursuit of a priceless artifact. The stories are at once romantic, pessimistic, filled with anxiety and a sense of alienation, and they define the essence of film noir. Noir emerged as a prominent American film genre in the early 1940s, distinguishable by its use of unusual lighting, sinister plots, mysterious characters, and dark themes. From The Maltese Falcon (1941) to Touch of Evil...