The codes and conventions of crime drama films

Codes and conventions are certain methods by which something is done. In film codes and conventions refer to camera methods, lighting of shots, and other technical methods that are used in film. They also refer to the location in which a genre of film shot for example a horror film would be filmed at locations that benefited the Genre. The clothing of characters within the film would also follow codes as certain clothes would be inappropriate for different genre's.

I believe that the codes and conventions for crime dramas are

• Mystery
• Excitement
• Action
• Dialogue 
• Believable story lines