Mystery of the Riverboat

Famed aviator Bruce Gentry is working with scientist Andrew Benson, setting out to uncover the origin of a deadly secret weapon---an electronically controlled flying disc which can be directed at moving or stationary targets. The disc was master-minded by an enemy agent known only as "The Recorder" because...he speaks entirely via recordings. Aided by rancher Frank Farrell and his sister Juanita "Nita" Hodges, Gentry consistently foils "The Recorders" schemes, which are carried out by "The Recorder's" henchmen, Krendon, Allen and Chandler, including an attack on the Panama Canal.

The Hazards of Helen is an American melodramatic adventure film serial of 119 twelve-minute episodes released between November 7, 1914 and February 24, 1917. Most episodes of this serial are presumed lost.

Buffalo Bill Cody battles a gang of outlaws secretly headed by an unscrupulous lawyer.

Dr. Mabuse and his organization of criminals are in the process of completing their latest scheme, a theft of information that will allow Mabuse to make huge profits on the stock exchange. Afterwards, Mabuse disguises himself and attends the Folies Bergères show, where Cara Carozza, the main attraction of the show, passes him information on Mabuse's next intended victim, the young millionaire Edgar Hull. Mabuse then uses psychic manipulation to lure Hull into a card game where he loses heavily. When Police Commissioner von Wenk begins an investigation of this mysterious crime spree, he has little to go on, and he needs to find someone who can help him.

The evil and masked "Gargoyle" is sabotaging all of America's industrial plants. It is up to the Spider to save the country.

Richard Grant, imprisoned in India for a crime he did not commit, escapes and makes his way to Africa.

Elmo finds himself in 18 different hair raising and dangerous adventures always escaping in the nick of time!

Mr. Lincoln's tremendous physique fits him especially for serial work, where strength and daring are all important! An 18-episode adventure movie serial where Elmo saves the day through derring-do.

A silent movie serial directed by George B. Seitz.

Movie serial directed by George B. Seitz.

A young heiress of an American gun factory is threatened by a masked man after her father was murdered. This criminal might be a member of her family or a German agent, who wants to get information about the factory's products, perhaps his mystery has a combined solution - we will probably never know...

Filmed in the Sierra Nevada mountains near Sonora, California, this Universal serial is Universal's 40th sound-era serial. Eagle Scout Bruce Scott, leader of Martinsville Troop Number One, and his pack sets off in search of lost treasure and finds adventure

A gang of Tripolitan pirates swooped down and kidnapped 13 wealthy brides, whom they held for ransom.

A movie serial in 12 chapters: The famous comic strip character is on a mission to protect a secret tunnel passage between China and India.

Japanese spies attempt to subvert America's war effort; G-Men attempt to thwart their plot.

A serial in 12 chapters. Tarzan goes to Guatemala to find his lost friend, D'Arnot. On the way he helps Major Matling search Mayan ruins for hidden jewels and an idol containing the formula for a powerful explosive. D'Arnot and the idol are rescued, but the idol falls into the clutches of the explorer Raglan.

A villain named Marlof attempts to set up secret missile bases inside Canada so he can launch missiles at the U.S. The Canadian Mounted Police dispatch agents to try to stop him.

Crooks discover a Genghis Khan treasure ship on the Canada-Alaska border but the treasure is hidden somewhere on land. In their efforts to find the hidden treasure they resort to murder and sabotage to stop the construction of the Alcan highway which will bring homesteaders to the area. Sergeant Royal of the Royal Canadian Mounted Police battles through 12 episodes to find the crooks and to learn the identity of their mysterious leader known only as 'The Boss'.

The female leader of an international crime ring steals a valuable artifact that can give her the power to control men's minds. Federal agents are dispatched to get it back and stop her evil plans.

Two federal agents battle a gang that hijacks trucks carrying materials vital for the security of the country and sells them to foreign powers.