Call Northside 777 is a 1948 American drama film directed by Henry Hathaway. The film parallels the true story of a Chicago newspaper reporter who proved that a man jailed for murder 11 years previously was wrongly convicted. James Stewart stars as the persistent journalist and Richard Conte plays the imprisoned Frank Wiecek. Wiecek is based on Joseph Majczek, who was wrongly convicted of the murder of a Chicago policeman in 1932, one of the worst years of organized crime during Prohibition.

In Chicago in 1932, during Prohibition, a policeman is murdered inside a speakeasy. Frank Wiecek and another man are quickly arrested, and, in November 1933, are each convicted and sentenced to serve 99 years imprisonment for the killing.

Eleven years later, Wiecek's mother puts a classified ad in the Chicago Times offering a $5,000 reward for information about the true killers of the police officer. City editor Brian Kelly assigns reporter P. J. McNeal to look more closely into the case. McNeal is skeptical at first, believing Wiecek to be guilty. But he starts to change his mind, and meets increased resistance from the police and the state's attorney's office, who are unwilling to be proved wrong. This is quickly followed by pressure from politicos at the state capital anxious to end a story that might prove embarrassing to the current administration.

Eventually, Wiecek is proved innocent by the enlarging of a photograph showing the date on a newspaper that proves that a key witness lied.

It was reported on January 24, 1947, that, according to the studio, the picture would be filmed in the documentary manner. Fox had obtained the necessary legal clearances from the persons involved in the story and had dispatched Otto Lang, producer, and Leonard Hoffman, writer, to Chicago to gather material for the film. Eventually, Quentin Reynolds and Jay Dratler joined Hoffman in writing the script.

According to a March 7 report in The New York Times, Twentieth Century-Fox had named Henry Fonda to play the lead in Call Northside 777, which would precedeChicken Every Sunday and Lone Star Preacher on Fonda's schedule. However, a month later he was cast in the lead for Daisy Kenyon. Two months later Fox replaced him with Jimmy Stewart in Call Northside 777." Lloyd Nolan was originally tabbed to play the role of Brian Kelly, but Lee J. Cobb ended up in the role. Leopoldine Konstantin was originally considered to play the wrongly convicted man's mother, but the part went to Kasia Orzazewski.

This was the first Hollywood feature film to be shot on location in Chicago.^{[citation needed]} Views of the Merchandise Mart as well as Holy Trinity Polish Mission can be seen throughout the film. A scene filmed at the Stateville Penitentiary shows the interior of the so-called "Roundhouse," a "panopticon" cell block built according to ideas originated by English philosopher Jeremy Bentham.^[2]

The movie’s screenwriters took liberties in a number of areas to make what they believed would be a more compelling story for a theater audience. Among them was that Wiecek’s innocence was determined not by enlarging a newspaper headline to catch a key witness lying about a minor point, but that the prosecution had suppressed the fact she had initially declared that she could not identify the two men involved in the police shooting.^[3]

The film opened at the New Theatre in Baltimore in the week ending 18 February 1948 and opened at the Roxy theatre in New York City on 18 February.^[4]

The film was nominated by American Film Institute for its list:

• 2001: AFI's 100 Years...100 Thrills^[8]

For an episode of CBS Radio's Hollywood Sound Stage, broadcast December 27, 1951, Harry Kronman adapted and directed a condensed 30-minute version of the film, casting Dana Andrews and Thomas Gomez in the leads. Tony Barrett, Bob Sweeney, Betty Lou Gerson, and Frank Nelson played supporting roles.

The April 17, 1951, audition episode of the radio program Defense Attorney (then titled Defense Rests) starring Mercedes McCambridge was based on the same plot, with some modifications.

Indian Hindi film Post Box 999 (1958) directed by Ravindra Dave was inspired by this film.^[9]