An American adventurer goes into the interior of Africa on a quest for the great starfire diamond.

After a love affair ending in an abortion, a young prison reformer submerges herself in her work. She then falls for a controversial and married judge and scandal looms again.

Veteran postman Bob Morley and his son Johnnie are honored for their service to the U. S. Mail Service. When Johnnie takes a position on the Enterprise, he is falsely convicted of theft and murder when the cargo is stolen and the ship's officer is shot.

Attracted to ranch owner Doris Hampton, Jack O'Neil impersonates convict "Angel Face" Harry, who is to be released from prison (a reform measure) to work on Doris' ranch. Jack discovers that Doris' cattle are being stolen by her foreman, Steve Gore, finds Gore's hiding place, and keeps him at bay until Doris rides up at the critical moment with help.

The plot, old-hat though it is, does provide an opportunity for that wonderfully seedy villain, David Dirby, to do his dirty work and more importantly, to tie all the thrillingly on-the-spot railroad footage together. Railroad buffs will enjoy all the atmospheric detail director Johnson has obtained by filming in real freight yards and inside and alongside real steam engines and rolling stock.

Stanley Gilmore, the son of a railroad president, atones for a series of wild escapades by traveling to Tennessee to secure a right-of-way through the property of farmer Dave Wade. Accompanied by his dog, Thunder, Stanley meets with Dave and initiates a friendship with the farmer's daughter, Patsy.

When he goes to war, Theodore Pendergast is a snob. When he returns from the trenches of France, he is a democrat whose best friend is Butch McGuire, an ex-prizefighter and regular guy. Ted (as he is now called) takes Butch home with him to meet his father, and the old gentleman immediately has Ted committed to a sanitarium.

A twenty-year veteran of the printing room of The San Francisco Chronicle is passed up for a promotion at the same time his son is accused of graft and involved in scandal. The historical landmarks of old San Francisco are present: The Pacific Telephone and Telegraph Building, City Hall and the Pickwick Hotel-- but they don't distract from the dramatic and emotional perforamces at the film's center.

Henry Potter is the irresponsible playboy son of a New York millionaire. Fearing he will disgrace the family name if he stays in New York, the father sends him to San Francisco to work in the family shipyards and, to make a man out of him, he is told he will have to start at the bottom and work his way up. Henry decides this is not a good idea and resents it to the point he will indeed start at the bottom but will work his way down from there, and disgrace the family name in San Francisco.

Ralph Tanner, a cub reporter on the Morning Standard, writes a highly libelous story about John Gorman, the political boss of the city. Wilbert, the publisher, and Dyke, the managing editor, are highly pleased about the story...until they learn that Tanner has no proof to back his statements. Tanner, aided and/or hampered by a mystery girl, Doris Leslie, and a hefty stenographer from the paper, Winnie Nash, and her even-huskier boyfriend, Bill Schultz, sets out to gather proof.

During a match with an opponent called The Weazel, a boxer named The Lightning Kid comes to believe that he has crippled his opponent. Distraught, he leaves the ring, vowing never to box again, and changes his name to Bob Trent. Sometime later he fights out that not everything was as he thought it was.

Three outlaws rescue a baby in the desert and with barely any water left try to return to the town in which they just robbed a bank. Lost film. A remake of 1916's "The Three Godfathers," which also starred Harry Carey.

Jack Donovan, a pitcher for the Chicago Cubs, refuses to throw a game for gambler Mike Moran. Moran retaliates by breaking up Donovan's family. Believing that his wife and son died in the sinking of an ocean liner, Donovan stays in baseball and, 20 years later, becomes manager of the New York Giants. What he doesn't know is that his family isn't dead and his son, Jack Jr., is now grown and looking for revenge against his father for what he believes was his abandonment of them.

William Ignatius Newton, a charmingly worthless young man, inherits a car, a dime, and a valet from his millionaire father, then sets out to learn about life. However, the elder Newton is still alive and has commissioned female detective Hazel Dawn to monitor William's activities, in the hope that the experience will make a man of him.

Diamond thieves have infiltrated the staff of O'Day Jewelry. The Los Angeles Police Dept. employs their newest weapon, an airplane, to help smash the diamond theft ring.

William Fielding, a young widower, is living in Shanghai with his little boy, David. A young Chinese woman looks after the child, and Foo Chang, a trader, lusts after her. Because he believes she is David's mother, he kills Fielding. Fielding's faithful secretary, Li Clung, takes the boy to San Francisco to be raised by his grandfather. As an adult, David (also played by Gilbert) fights against opium trafficking with Li Clung's help.

Johnnie Gains, son of a farming couple, is industrious and imbued with a spirit of sacrifice. Rejected for military service because of an eye injury, he enlists in the Salvation Army.

After suffering a fall during a race, rider Jimmy Burke loses his nerve. But with the help of his girlfriend Molly Gibson, Jimmy regains his confidence just in time to achieve victory during the Big Race.

When a builder receives a contract for the construction of a large dam, his business rival sets out to blacken his good name by substituting inferior cement while the dam is being built. Bob Downes, a bright young man who hates his soft job, learns of the plot to ruin the dam and lends his considerable energy to defeating the conspirators.

Juan de Dios O'Rourke, an American Secret Service, of Spanish-Irish descent, leads the cattle ranchers and border patrol in a fight to suppress a gang of cattle rustlers, who have been driving large herds north-to-south from Texas into Mexico, and smuggling illegal, no-passport Chinese aliens south-to-north from Mexico into Texas, operating from a rambling mansion on the Texas side of the border, aided by his sweetheart, a rancher's daughter, Phoebe Joyce.