Film noir research

Noir film 
Film noir is a cinematic term used primarily to describe stylish Hollywood crime dramas, particularly those that emphasize cynical attitudes and sexual motivations. Hollywood's classical film noir period is generally regarded as extending from the early 1940s to the late 1950s.
To light in a film noir style, there are three basic things to remember: 
~To get hard crisp shadows, 
~Use a small intense light. (Fresnels, lekos, reflector spots) 
~Emphasize the difference between high and low-key lighting (lots of fill, high-key lighting)

The lighting is one of the main features in this movie clip. There's a key light throughout the whole clip, but there's no filler lights. The camera angles are also pretty unique for noir films. 

There's a big contrast of black and white, and a lot of shadows.