Film Noir

Film Noir was a term about a group of films made in Hollywood between 1941 to 1958. The term was created by French film critics.
These films are characterized by their dark, pessimistic themes that present the darker side of human nature.
These films are filmed using low-key lighting to give the films a sharp look with contrast between dark and light.
This type of film at no time misleads you into thinking that there will be a happy ending.
They are normally in locations that consist darkness, such as in the shadows, in alleys, in the back doors of fancy places, taxi drivers and bartenders are usually involved, and it is always at night when events occur.
The women in Film Noir movies will just as much kill you as love you, and vice versa.
Women would wear lipstick, low necklines, red dresses, high heels, elbow-length gloves and they would call the doorman by their first names, mix drinks, have gangsters as boyfriends and soft spots for private eyes.
Men would wear suits and ties, fedoras, living in shabby residential hotels with a neon sign flashing through the window. They are on first-name terms with homicide police, stop the little kids playing  with the bad guys, driving cars with running boards and eating in all-night diners.
The movies were either shot in black and white, or they feel like they were.
It is known as the most American film genre, for it is the most unrealistic. No society could have created a world filled with so much fear, fate, doom and betrayal.