Desc: The Single Track: Directed by Webster Campbell. With Corinne Griffith, Richard Travers, Charles Kent, Sidney Herbert. A damsel-in-distress Western melodrama and a stirring picture of railroad construction and the mining country, with a Snidely Whiplash villain performing dastardly deeds, a spunky and gritty Polly Pureheart heroine and a brave Handsome Harry hero...and filled with action, romance, adventure, bravery...and perils.