The Great Radium Mystery

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...

Advertising man Roger Thornhill is mistaken for a spy, triggering a deadly cross-country chase.

Man-woman team of investigators uncover a gang whose mad scientist leader has developed an invisibility chemical and plans to build a mercenary army...

An accomplished aviator sets out to locate treasure hidden by one of his ancestors. He encounters interference from various adversaries.

Dr. John Meredith has been driven from civilization by the criminal activities of his twin brother Bradley Meredith. With his infant daughter, he...

A young boy and a girl with a magic crystal must race against pirates and foreign agents in a search for a legendary floating castle.

Captain Bob Dayton and Lieutenant Ed Carey are partners in a company called "Sky Raiders" which seeks US government contracts for its inventions. ...

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 group steals a death ray in order to terrorise the world into peace. The inventor and his daughter try to retrieve the death ray with the aid of a...

When members of the nefarious crime syndicate KAOS attack the U.S. spy agency Control and the identities of secret agents are compromised, the Chief...

A newspaper publisher and his Korean servant fight crime as vigilantes who pose as a notorious masked gangster and his aide.