The 15 chapter story involves the heroine being protected by a shadow with burning eyes. There's also a cloak of invisibility, some hypnotism and a giant octopus added to the mix.
Grace Darmond, Ralph Kellard, Léon Bary, Madlaine Traverse, Lionel Braham, Frankie Mann, Leslie King

Buffalo Bill Cody battles a gang of outlaws secretly headed by an unscrupulous lawyer.
1950

When the unscrupulous Carlos Manning discovers that an old Spanish land grant recently unearthed will leave a huge section of California real estate to the heirs of Don Quantero, he employs Mel Donovan and his killer henchmen to murder them all. That will leave Manning as the sole heir to millions. However, Delores Quantero tumbles to this plot and enlists the aide of two-fisted reporter, Cliff Roberts to save all her relatives
1946

Japanese spies attempt to subvert America's war effort; G-Men attempt to thwart their plot.
1943

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.
1943

Prospector Henry Tolliver disappears and his son "Wild Bill" Tolliver comes looking for him.
1942

King of the Candian riding police is up against Japs and Nazis who are about to invade Canada. They just want to clear the way with a new futuristic plane called "The Falcon" first, but that's not gonna happen if Kig has his way.
1942

The evil and masked "Gargoyle" is sabotaging all of America's industrial plants. It is up to the Spider to save the country.
1941

The nefarious Dr. Fu Manchu searches for the keys to the tomb of Genghis Khan, in order to fulfill a prophecy that will enable him to conquer the world. His nemesi, Dr. Nayland Smith and his associates fight to keep the evil doctor from getting his hands on the keys. In 1943 the serial was edited together into a feature movie also called Drums of Fu Manchu.
1940

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
1939

Disaster seems imminent when scientists discover that the planet Mongo is about to crash into Earth. Luckily, heroic young Flash Gordon is on hand to lead an investigative mission into outer space and onto the speedily approaching planet. There, he and his best girl, Dale, who is along for the ride, learn that Ming, the devious ruler of Mongo, has purposely put the planet on a collision course with Earth, and only Flash can stop him.
1936

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.
1935

The hunter becomes the hunted, an officer of the Royal Mounted, fleeing, fighting for his life. Guided to a secret valley in the frozen North by a hot-blooded French-Canadian beauty, with a secret of her own...
1922

A gang of Tripolitan pirates swooped down and kidnapped 13 wealthy brides, whom they held for ransom.
1920

Daniel Robin has become mixed up with a band of criminals known as "the 13," and is shot when he refuses to do their bidding. His daughter Ruth, brought home from boarding school, reaches his bedside before he expires. He tells her that she will be given thirteen keys. Instructions will be provided with each key and, if she follows the instructions, she will eventually fully learn of her birthright. Many adventures then follow as Ruth attempts to solve the puzzle of each key and establish her true birthright.
1919

A young newspaperwoman travels to a South Seas island to search for buried treasure.
1919

An American adventure film serial comprised of fifteen episodes of two reels (24 min) each. All chapters are presumed lost.
1916

In China, a man is arrested and tortured for a crime committed years before by his twin brother.
1915

Irrepressible Helen Rhinelander, the daughter of a railroad president. A dastardly villain, Segrue, however, desires not only Helen but also the plans for a new railroad. Happily, Helen's childhood sweetheart, Paul Storm, now an engineer, is right there to protect the damsel-in-distress through the serial's 15 exciting chapters.
1915

The serial detailed the experiences of Kathlyn Hare, the pretty daughter of an explorer. Kathlyn resided in a mythical India, fighting off unwanted advances from a handsome native, Umballah, when not battling an endless array of ferocious jungle fauna.
1913

Just as Galeen and Wegener's Der Golem (1915) can be seen as a testament to early German film artistry, The Story of the Kelly Gang (1906) symbolizes both the birth of the Australian film industry and the emergence of an Australian cinema identity. Even more significantly, it heralds the emergence of the feature film format. However, only fragments of the original production of more than one hour are known to exist, preserved at the National Film and Sound Archive, Canberra; Efforts at reconstruction have made the film available to modern audiences.
1906