hard-boiled
“A type of 20th-century American crime story, which combined the style of realism with a subject of increasing interest: urban crime. Hard-boiled fiction gained a reputation for laconic, witty, and sometimes realistically crude dialogue; the graphic and objective depiction of violence; and the introduction of seedy, corrupt, and sordid settings” (Source: Benet’s, 446).
Example: The Last Good Kiss by James Crumley.