Call Northside 777

In 1932 December, in Chicago, the Polish Wanda Skutnik runs a speakeasy during the Prohibition. When a policeman is murdered inside the illegal bar, Frank W. Wiecek and his friend Tomek Zaleska are arrested and sentenced to serve 99 years each in the Illinois State Penitentiary. Eleven years later, the Chicago Times' editor Brian Kelly is curious with an advertisement offering a US$ 5,000.00 reward for information about the identity of the killers of the policeman eleven years ago. He assigns the efficient reporter P.J. McNeal to interview the person responsible for the ad. McNeal discovers that Frank's mother Tillie Wiecek, who is a janitor, has saved her salary for eleven years to prove the innocence of her beloved son and now is offering the reward for additional information. McNeal is skeptical and believes that Frank is a cop killer, but his matter is successful and Kelly asks him to investigate further. Soon he changes his mind and realizes that Frank is a victim of the corrupt system.