A dying Marshal gives his identification papers to Tom. After Tom arrives in town, the papers drop and are found during a fight so Tom decides to assume the Marshal's identity. Mason, the chief, now sends Rattler, the killer of the Marshal, to also kill Tom. But when he overhears Tom is a fake, they change their plans and now go to arrest Tom for the murder of the Marshal.

Trouble has been reported in Placerville where Tom Barton's brother is the Marshal. Arriving Tom finds a phoney Marshal in his brother's place. Learning that Clark is behind the all the trouble and that he is after the Madison stage line, Tom joins up with Mary Madison to fight Clark while he also looks for his missing brother.

Clay Morgan kills Joel Potter and Marshal Manning has to arrest the brother of the girl he plans to marry.

After noted violinist Arthur Williams suffers a hand injury which ends his playing career, his hopes are transferred to his son, who prefers swing music to classical.

Private detective 'Duke' Martindale and his wife, Phyllis, an attorney, are working together to clear a girl falsely convicted of murdering a judge. Two people who know the truth are killed and 'Duke' Is shot at. Despite some interference by Police-Sergeant Brent, and a dangerous automobile chase and 'Duke' and Phyllis finding themselves prisoners of the real murderers, the case is solved.

Western, featuring Rin Tin Tin Jr., about a man trying to find an old friend in a town that is trying to deceive him.

Spectacular stunt work by Richard Talmadge, circus acrobat and stunt man for Douglas Fairbanks, Sr., highlights this expose of a big city criminal mastermind.