Directed by Spencer Gordon Bennet, Thomas Carr | Starring: Jock Mahoney, Virginia Herrick, William Fawcett, Harold Landon

Columbia Pictures elevated stunt man Jock O'Mahoney to stardom in this 15 chapter western serial about the building of the transcontinental railroad. O'Mahoney played a railroad agent who uncovers the master criminal behind a series of sabotage attempts on the construction site.

IMDb Roar of the Iron Hor... movie posters