Mandrake and his assistant Lothar are working the cruise lines and make the acquaintance of Professor Houston who has developed a radium energy machine, which is much coveted by a masked Crime Lord known as "The Wasp".
A gambling ring run out of the Mogul Taxi company is intent on fixing college football games. Football star Harold "Red" Grange is a target for the gamblers, whose thugs try to eliminate Grange from playing. Grange's buddy Buddy is himself vulnerable to blackmail, since he has broken team rules by marrying. The crooks use all their wiles to keep Grange and Buddy from leading their team to victory.
This show featured four rotating stars, Charles Boyer, David Niven, Ida Lupino, and Dick Powell in individual episodes consisting of everything from comedy to drama.
New York City policewoman Casey Jones' assignment to fight crime often entails her going undercover in some of the seediest and most dangerous parts of the city.
The adventures of master detective Sherlock Holmes as he and his assistant, Dr. Watson--and, somewhat reluctantly, the bumbling Inspector Lestrade--battle criminals in London.
Former combat cameraman Mike Kovac is now a freelance photographer in New York City, specializing in difficult and dangerous assignments where he can get the kinds of pictures that other photographers can't, or won't take. He sometimes gets help, often reluctantly, from his contact in the police department, Lt. Donovan, and advice from his immigrant father Anton.
A movie serial in 13 chapters: Some swampland becomes valuable, and various factions squabble over ownership of it.
The nefarious Dr. Fu Manchu searches for the keys to the tomb of Genghis Khan, in order to fulfill a prophecy that will enable him to conquer the world. His nemesis, Dr. Nayland Smith, and his associates fight to keep the evil doctor from getting his hands on the keys.
Using a diabolical disguise, Harry Crowel embarks on a vengeful career of destruction...opposed by three heroic daredevils.
A crime fighter known as The Spider battles a villain called The Octopus, who is out to sabotage America and install his own government.
A mysterious criminal known as The Whispering Shadow commits crimes by means of a gang he controls by television and radio rays. Jack Norton, whose brother was murdered by The Whispering Shadow, suspects that the eerie Professor Strang - whose ghostly wax museum contains figures far too lifelike - may be involved in the crimes.
A wealthy publisher uses a disguise and calls himself the Green Hornet to fight crime in his city.
A newspaper publisher and his Korean servant fight crime as vigilantes who pose as a notorious masked gangster and his aide.
A murderous gang of counterfeiters has kidnapped the government's best engraver and is forcing him to print virtually undetectable phony money. The Secret Service sends its toughest agent, Jack Holt, and a female partner after the gang.
An intrepid reporter and his loyal friend battle a bizarre secret society of criminals known as The Vampires.
A madman sets out to destroy a group of Chinatown merchants.
The Dead End Kids go after a gang known as the Sea Raiders, which is sinking Allied shipping.
A military intelligence officer and a pretty reporter try to find a scientist whose inventions can destroy the world.
A master criminal called The Spider puts the famous detective's brother under a hypnotic spell and turns him against Dick.
The struggle over the Bellamy estate ends with Michael Bellamy accused of murder and killed on the way to prison, while his brother, Abel Bellamy, takes control of the estate for his own nefarious plans.
A gang of street kids work with the FBI in their attempt to find and rescue their leader's father, a scientist who has been kidnapped by a terrorist group.
When his father is killed in a train wreck, Larry Baker vows to unmask a mysterious criminal called "The Wrecker," who has targeted the L&M Railroad for deadly" accidents."
The Eagle uses sky writing to make threats against a corporation. Nathan Gregory owns a traveling fairground and is thought to be the Eagle. Craig McCoy is a pilot who goes looking for the Eagle when Gregory turns up missing.
A 14-episode serial in which Mala, a Polynesian in the employ of U.S. Intelligence investigates sabotage on Clipper Island. A gang of spies causes the eruption of a volcano, for which our hero is blamed. He convinces the local Princess Melani of his innocence and helps her ward off a takeover by rival high priest Porotu.
A scientist discovers a formula for making synthetic gold.
Police detectives battle the League of Murdered Men, a gang of resurrected dead criminals.