Robert Youngson's affectionate, nostalgic retrospective of the Golden Age of Silent Comedy with special attention to the three acknowledged comic geniuses of the period: Charlie Chaplin, Buster Keatonm and Harry Landon. The two major comedy studios of the era, Mack Sennett and Hal Roach, especially Laurel an Hardy, are given credit as the great innovators of slapstick visual comedy.