The Big Heat

The Big Heat is a 1953 American film noir crime film 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. William P. McGivern's serial in The Saturday Evening Post, published as a novel in 1953, was the basis for the screenplay, written by former crime reporter Sydney Boehm. The film was selected for inclusion in the National Film Registry of the Library of Congress in 2011. Plot Homicide detective Sergeant Dave Bannion, of the Kenport Police Department, is called to investigate the suicide of a rogue fellow officer, Tom Duncan. His wife, Bertha Duncan, says her husband had recently been in ill health. He left behind an envelope addressed to the district attorney, which she keeps under wraps and locks away in her safe-deposit box at the bank.