1. Mysterious Doctor Satan
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.
It has an average vote of 5 on TMDB.
2. The Vanishing Dagger
(The Vanishing Dagger)
3. The Flaming Disk
Criminals steal a death ray that concentrates the rays of the sun. The inventor's daughter and a government agent try to retrieve it.
4. Jungle Girl
Dr. John Meredith has been driven from civilization by the criminal activities of his twin brother Bradley Meredith. With his infant daughter, he settles in the African jungle, where his ability to cure the native ills has resulted in his virtual control of the Masamba tribes, who possess vast diamond mines coveted by a gang of crooks.
It has an average vote of 6.2 on TMDB.
5. Son of the Guardsman
David Trent is a nobleman who forms an outlaw group to combat his evil uncle Sir Edgar Bullard. The outlaws of Sherwood Forest are championing young Roger Mowbray, really Prince Richard, whose right to the throne is being usurped by an evil regent.
It has an average vote of 5 on TMDB.
6. The Phantom
Two expeditions are trying to reach the Lost City of Zoloz -- one headed by Professor Davidson, a scientist who wants to establish an archaeological site, and the other by a greedy treasure hunter who wants to keep the fabled treasures of the city for himself. An agent of a foreign power also wants to establish a secret airbase there, so he stirs up the natives against The Phantom, who has been able to get them to stay peaceful so far. When The Phantom is murdered, his son takes his place and sets out to restore peace to the jungle and stop the agents' and the treasure hunters' nefarious plans.
It has an average vote of 6.222 on TMDB.
7. Jungle Jim
Two safaris enter the African jungle intent on finding a white girl who is the heiress to a fortune. One safari, led by Jungle Jim, wants to make sure she gets the news that she is now a rich woman. The leaders of the other safari want to kill the girl so they can try to get hold of her inheritance.
It has an average vote of 4.8 on TMDB.
8. Blake of Scotland Yard
A 15 episode serial in which Blake battles the "Scorpion" over possession of a 'death ray' machine.
It has an average vote of 2 on TMDB.
9. Flash Gordon
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.
It has an average vote of 6.3 on TMDB.
10. King of the Carnival
Treasury agents go after a ring of counterfeiters operating out of a traveling carnival.
11. The Crimson Ghost
A criminal mastermind known as The Crimson Ghost is out to steal a device called the Cyclotrode, which can short-circuit all electrical current on the planet.
It has an average vote of 4.95 on TMDB.
12. The Railroad Raiders
A silent movie serial
13. Deadwood Dick
Columbia's 11th serial and the first western serial that James W. Horne solo-directed.
14. Junior G-Men of the Air
A group of street kids battle a terrorist gang led by a Japanese spy.
It has an average vote of 6 on TMDB.
15. The Adventures of Frank Merriwell
A 12-episode serial in which scholastic sports star Frank Merriwell leaves school to search for his missing father. His adventures involve a mysterious inscription on a ring, buried treasure, kidnaping and Indian raids. He saves his father and returns to school just in time to win a decisive baseball game with his remarkable pitching and hitting.
It has an average vote of 4 on TMDB.
16. The Secret Code
A superhero known as The Black Commando battles Nazi agents who use explosive gases and artificial lightning to sabotage the war effort.
It has an average vote of 4.8 on TMDB.
17. Adventures of Red Ryder
Calvin Drake employs a group of low-lifes to drive away land owners along the path of a new railroad; Red Ryder opposes this strategy.
It has an average vote of 5.5 on TMDB.
18. The Lure of the Circus
Lure of the Circus is a 1918 American adventure film serial directed by J. P. McGowan.
It has an average vote of 5 on TMDB.
19. 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.
It has an average vote of 5.5 on TMDB.
20. The Renegade
Town banker John Martin calls on Billy and Fuzzy for help in capturing the men that robbed his bank.
It has an average vote of 5 on TMDB.