The Fortieth Door (1924)

Hawk of the Wilderness

An expedition arrives on an uncharted jungle island to rescue the local natives, led by a jungle boy, from a volcano that is about to erupt.

Pirate Treasure

An accomplished aviator sets out to locate treasure hidden by one of his ancestors. He encounters interference from various adversaries.

Red Barry

A police detective is caught up in a plot to steal two million dollars in bonds.

Neal of the Navy

A former Annapolis cadet is thrown out of the Naval Academy for cheating on an exam. Of course he was framed, but he must enlist in the Navy to clear himself. Meanwhile he and his sweetheart search for a buried treasure on Lost Island, which everyone is after.

The Iron Claw

Only Episode 7, "The Hooded Helper," of this 20-Episode Serial is known to survive. All other episodes are believed to be lost.

The Green Hornet

A newspaper publisher and his Korean servant fight crime as vigilantes who pose as a notorious masked gangster and his aide.

Congo Bill

Congo Bill is hired to locate an heiress lost somewhere in Africa.

Jungle Raiders

Greedy traders have kidnapped a researcher, hoping he will reveal the location of a treasure in a hidden village. Family and friends of the researcher come looking for him. Adventure ensues.

Spy Smasher

Prior to the United States' involvement in World War II, the masked vigilante Spy Smasher fights Nazi agents operating within the US, led by the treacherous sabotage leader codenamed The Mask.

The Spider Returns

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

The Lost Jungle

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

The Adventures of Smilin' Jack

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.

The Adventures of Kathlyn

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.

King of the Mounties

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.

Cody of the Pony Express

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

The Great Gamble

The Great Gamble is a 1919 movie serial.

Scouts to the Rescue

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

Perils of the Jungle

A young woman and her father search for hidden treasure in the African jungle.

Hands Up

A newspaperwoman finds trouble aplenty when an Inca tribe believes her to be the reincarnation of their long-lost princess.

The Great Alaskan Mystery

The obsessive scientist Dr. Miller is working on a matter-transmitter invention called the Paratron; a conspiratorial team of spies and no-goods pursue him to Alaska, trying to steal the device.

Jungle Menace

Mystery and adventure, surrounding a stolen rubber harvest.

The Black Coin

Government agents try to thwart smugglers, while some sort of plot unfolds, about a hidden treasure revealed by cursed coins.

The Wolf Dog

The story of a boy, a dog, and a man. The boy discovers he is heir to a shipping line, and travels to Los Angeles, accompanied by inventor/radio operator Bob Whitlock and Irene Blaine. Their journey is aided by Pal, a wolf dog.

The Tiger's Trail

A cult of Hindu tiger worshippers and a gang of Western outlaws try to cheat a young woman out of rich mines that belong to her.

The Adventures of Robinson Crusoe

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 Lost Special

A lady reporter and two college students search for the "Gold Special," a train that disappeared without a trace.

The Shielding Shadow

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 Lightning Raider

A beautiful young woman is a daring master thief. She meets the young millionaire Thomas Babbington Norton, while fleeing from the scene of her latest theft.

Wild West Days

Retired lawman Kentucky Wade and his three buddies, Mike Morales, "Dude" Hanford and "Trigger" Benton come to Brimstone and help their friends Larry Munro and his sister, Lucy , in their fight to retain control of Larry's rich ore mine. "Doc" Hardy , as an old friend of Wade's, joins them in their efforts to keep Matt Keeler , the scheming owner of "The Brimstone News", from his efforts to wrest control of Munro's property and mine. Keller employs a legion of henchmen, and sidelines at running runs guns to Red Hatchet and his tribe so they can also get in on the fray against the Munro's and Kentucky and friends.

The Million Dollar Mystery

This twenty-three episode serial told the story of a secret society called The Black Hundred and its attempts to gain control of a lost million dollars.

The Hurricane Express

The Wrecker wrecks trains on the L & R Railroad. One of his victims is Larry Baker's father. Baker wants to find the evildoer, among a host of suspects, but it will be difficult since the Wrecker can disguise himself to look like almost anyone

The New Adventures of Tarzan

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.

The Ventures of Marguerite

As heiress to a large fortune, Marguerite is able to satisfy her love for beautiful clothes and a taste for adventure, while confronted by a multitude of schemers and gangsters bent on reducing her to poverty.

The Adventure of the Torture Cage

Lieutenant Commander John Byrne of the Naval Secret Service and his partner Pvt. Bill Riggers chase criminal Dr. Sin Fang, who is desperate to find a lost sacred seal. (The fifth and only surviving episode of a six-part serial about an evil mastermind inspired on Sax Rohmer's Dr. Fu Manchu.)

Daughter of Don Q

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 Black Secret

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"

Young Eagles

Two Boy Scouts win an around-the-world trip with a crack aviator, and find themselves crash-landed in the South American jungles after the ace forgets to refuel in Ecuador.

King of the Wild

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

King of the Rocket Men

Prof. Millard pretends to be dead and helps Jeff King ferret out Vulcan, the evil traitor at the science academy. Donning his Rocket Man costume King goes from one hair raising rescue to the next in order to keep the newly invented Decimator out of the clutches of Vulcan and his minions.

The Perils of Pauline

The Perils of Pauline is a motion picture serial shown in weekly installments featuring the actress Pearl White playing the title character. Pauline has often been cited as a famous example of a damsel-in-distress, although viewers will find her character more resourceful and less helpless than the classic 'damsel' stereotype. Nine episodes (from a condensed 1916 re-release) survive to this day.