The Big Heat (1953) is a classic film noir directed by Fritz Lang. It follows the story of Detective Dave Bannion (Glenn Ford) as he investigates a corrupt police force and a powerful crime syndicate. Bannion's investigation leads him to the mob boss
From Wikipedia
The Big Heat is a 1953 American film noir directed by Fritz Lang starring Glenn Ford, Gloria Grahame, and Jocelyn Brando about a cop who takes on the crime syndicate that controls his city.