A famous scientist invents a humanoid robot (the titular "monster"), so a greedy rival scientist plans to steal it for use in his criminal plans. His henchmen often kidnap a trained gorilla (the titular "ape") from the zoo, to aid in the schemes.
A newspaper publisher and his Korean servant fight crime as vigilantes who pose as a notorious masked gangster and his aide.
A police detective is caught up in a plot to steal two million dollars in bonds.
Man-woman team of investigators uncover a gang whose mad scientist leader has developed an invisibility chemical and plans to build a mercenary army of invisible men.
An accomplished aviator sets out to locate treasure hidden by one of his ancestors. He encounters interference from various adversaries.
An action-themed movie serial.
Captain Bob Dayton and Lieutenant Ed Carey are partners in a company called "Sky Raiders" which seeks US government contracts for its inventions. Enemy spies attempt to steal, sabotage and discredit the inventions and founders of the company.
Four youthful cadets are implicated in a series of murders, and must attempt to clear themselves of suspicion.
An escaped criminal impersonates a Police Commissioner, causing no end of trouble to a determined Federal Agent.
A Martian invader crashes his spaceship conveniently close to the workshop of a scientist who is developing an interplanetary craft. If the extraterrestrial Purple Monster can complete the rocket ship and return to Mars, he will be able to start a full-scale invasion of Earth. Good thing Craig Foster sets out to thwart the Monster's mission!
Claire Forrest seeks her kidnapped scientist father, hidden somewhere on Mystery Island. He is held and forced to work on diabolical inventions by Captain Mephisto, a costumed villain.
Dr. Ernst Grood , having already dominated the planet Ergro, now intends to take over the control of the Earth. Unfortunately for him, reporters oppose his sinister designs.
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.
A team of two-fisted insurance investigators (one of whom disguises himself as The Masked Marvel) endeavor to discover and thwart the loathsome saboteur Sakima.
Congo Bill is hired to locate an heiress lost somewhere in Africa.
Only Episode 7, "The Hooded Helper," of this 20-Episode Serial is known to survive. All other episodes are believed to be lost.
An early Thomas Edison short. A young woman is kidnapped while attending a play in Chinatown. A reporter attends another play in Chinatown, is likewise kidnapped and rescues the young woman. Preserved by the Academy Film Archive in 2011 in partnership with the National Film Preservation Foundation New Zealand Project.
Miracles of the Jungle is a 1921 serial film
Two marine lieutenants battle a masked would-be world conqueror who uses electricity as a weapon.
Sliding Home is the tenth episode of the second series of Universal Pictures serial "The Collegians."