A movie serial directed by Francis Ford.

Professor Campbell's expedition into the hills of Libya obtains a papyrus which might reveal the hiding place of the Golden Tablets of Hippocrates, containing lost medical secrets. Also in the region is intrepid Nyoka Gordon, still seeking her father, lost on a previous expedition. She alone can translate the papyrus, which directs our heroes through deadly perils (including the Tunnel of Bubbling Death) into the land of the Tuaregs. Opposing them are Vultura, Queen of the Desert, and her Arab ally Cassib, both greedy for the treasure...

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.

A train that is carrying the formula for a valuable form of granulated gasoline disappears before it reaches its destination. Railroad investigators and the authorities try to determine where it is and who took it.

No description available.

Constable Ward is assigned to track down a mysterious villain known only as The Leader. Trying to locate a secret gold mine, The Leader pits the Indians against the Mounties, whom he blames for creating trouble.

On the American frontier in the last decades of the 19th century, Billie is a female cowboy who fights a series of bad men in this film serial.

Eddie King goes up against a villainous circus owner in this action adventure which was directed by genre specialist J.P. McGowan and released in 18 chapters.

A series of 2-reel thrillers in which a society girl has a position as a special investigator for the police and works on various cases where her unique talents can help to solve crimes. Each episode is complete in itself.

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...

A mad scientist named Dr. Satan plots to steal key pieces of technology to enable him to build an army of robots based on his prototype to conquer America. The only one standing in his way is Bob Wayne, who fights Satan as the enigmatic Copperhead. Mysterious Doctor Satan is a 1940 film serial named after its chief villain. Doctor Satan's main opponent is the masked mystery man, "The Copperhead", whose secret identity is Bob Wayne, a man searching for justice and revenge on Satan for the death of his step-father. The serial charts the conflict between the two as Bob Wayne pursues Doctor Satan, while the latter completes his plans for world domination.

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.