The term 'Crime Movie Genre' can be summarized by the four-letter word 'NOIR'. NOIR is a genre of crime movie that originated in the 1940s and 1950s, characterized by dark and cynical themes, as well as a sense of moral ambiguity. NOIR films often feature a detective or private investigator as the protagonist, and often take place in urban settings. NOIR films are known for their use of black-and-white cinematography, and for their focus on the psychological aspects of crime and its consequences.