The Streets of San Francisco is a television crime drama filmed on location in San Francisco and produced by Quinn Martin Productions, with the first season produced in association with Warner Bros. Television (QM produced the show on its own for the remainder of its run). It starred Karl Malden and Michael Douglas as two homicide Inspectors in San Francisco. The show ran for five seasons, between 1972 and 1977, on ABC, amassing a total of 119 60-minute episodes. Douglas left the series at the start of its final season, and was replaced by Richard Hatch.