Final answer:
Film noir is the type of filmmaking originated in Hollywood characterized by a dark and brooding style, and murder-mystery content.
Step-by-step explanation:
The type of filmmaking that originated in Hollywood and is typified by a dark and brooding style, and murder-mystery content is film noir. Film noir is a genre of film that emerged in the 1940s and 1950s, characterized by its use of hardboiled crime narratives, low-key lighting, and a sense of moral ambiguity. It often portrays protagonists who are flawed and conflicted, and explores themes of crime, corruption, and disillusionment.