Haunted Harbor

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.

The Great Gamble is a 1919 movie serial.

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

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.

An adventure serial released in 1918

12 part movie serial where Clyde Beatty encounters obstacles and adventure on his way to rescue his damsel in distress.

Adventures of an American Secret Service-girl in search of an important German secret during the war. Chapters: [1] “The Great Secret,”; [2] “Marked for Death,”; [3] “The Gas Chamber,”; [4] “Below the Waterline,”; [5] “The Acid Bath,”; [6] “The Unknown,”; [7] “The Betrayal,”; [8] “A Crippled Hand,”; [9] “Woes of Deceit,”; [10] “The Inn of Dread,”; [11] “The Death Studio,”; [12] “The Chance Trail,"; [13] “Wings of Mystery,”; [14] “The Hidden Way,”; [15] “The Secret Host"

A movie serial directed by Francis Ford.

An 18-part silent American adventure film serial now considered to be lost. Chapter Titles: 1. The Sea Raiders 2. Shipwrecked 3. The Cannibals' Captives 4. Hidden Gold 5. The Ship of Despair 6. Friday's Faith 7. The Swamp of Terror 8. Marooned 9. The Jaguar Trap 10. A Prisoner of the Sun 11. No Greater Love 12. The Island of Happiness 13. The Sword of Courage 14. The Buccaneers 15. The Jolly Roger 16. The Idol's Bride 17. When the Heart Calls 18. Back to the Primitive

The Strings of Steel is a silent Action serial. Episode titles: 1. The Voice on the Wire 2. The First Central 3. Fighting for Love 4. The Power of Might 5. Kings of the Wire 6. Voice of the Continent 7. Telephone Poles 8. War of the Wire 9. When Lightning Strikes 10. Love and Victory.

Hidden Dangers is a 1920 serial film.