Premise: Call Northside 777 is a 1948 reality-based film noir directed by Henry Hathaway and starring James Stewart. The picture parallels a true story of a Chicago reporter who proved that a man in prison for murder was wrongly convicted 11 years before. The names of the real wrongly convicted men were Majczek and Marcinkiewicz for the murder of Chicago Traffic Police Officer William D. Lundy.
Hypothesis: James Stewart played the part of a man in prison for murder.