An evil scientist invents a earthquake machine and plots to take over the world from his base in Africa.
A variety of people are searching for a long-hidden treasure somewhere on an island. Chapters: 1. ...
The nefarious Dr. Fu Manchu searches for the keys to the tomb of Genghis Khan, in order to fulfill a...
Disaster seems imminent when scientists discover that the planet Mongo is about to crash into Earth....
Part of the artificial-creature series encompassing Der Golem (1914 and 1920), Alraune (1918, 1928, ...
Man-woman team of investigators uncover a gang whose mad scientist leader has developed an invisibil...
Buck Rogers and Buddy Wade are in the middle of a trans-polar dirigible flight when they are caught ...
The Daily Clarion hires detective story writer Steve Colt to investigate the deaths of a group of sc...
A Martian invader crashes his spaceship conveniently close to the workshop of a scientist who is dev...
Claire Forrest seeks her kidnapped scientist father, hidden somewhere on Mystery Island. He is hel...
Dr. Ernst Grood , having already dominated the planet Ergro, now intends to take over the control of...
Prof. Millard pretends to be dead and helps Jeff King ferret out Vulcan, the evil traitor at the sci...
A famous scientist invents a humanoid robot (the titular "monster"), so a greedy rival scientist pla...
A mad scientist named Dr. Satan plots to steal key pieces of technology to enable him to build an ar...
Two marine lieutenants battle a masked would-be world conqueror who uses electricity as a weapon.
A newspaper publisher and his Korean servant fight crime as vigilantes who pose as a notorious maske...
A mad scientist attempts to rule the world by creating various elaborate inventions.
Commando Cody, 'Sky Marshal of the Universe', works with American scientists Joan Gilbert and Ted Ri...
Criminals steal a death ray that concentrates the rays of the sun. The inventor's daughter and a gov...
A 15 episode serial in which Blake battles the "Scorpion" over possession of a 'death ray' machine.
Mota is a Martian representative, who has come to impose interplanetary law on the Earth (which has ...