The Chicago Police Department, also known as the CPD, is the principal law enforcement agency of Chicago, Illinois, in the United States. * In the 1948 film Call Northside 777, James Stewart played the role of a skeptical newspaper reporter, who initially did not believe the story from a cleaning woman that her son, young Frank Wiechek was innocent in the case of murdering a Chicago policeman. The film is based on the true story of a 1932 crime. * In Alfred Hitchcock's 1959 North by Northwest, the Chicago Police arrest the protagonist, Roger Thornhill, only to later have to release him. * The 1957–1960 television series M Squad centered on a squad of Chicago Police detectives. The episode "The Jumper" featured an officer taking bribes. It was reportedly this depiction that prompted then