Holt of the Secret Service

Escaped Prisoner 39013 impersonates the rich and influential Horace Granville, allowing him to create a variety of disasters. Fortunately, he is...

Two British officers are assigned to collect information to convict Captain Kidd of piracy.

Mota is a Martian representative, who has come to impose interplanetary law on the Earth (which has become too dangerous); opposing his authority is...

Jerry Blake (aka Federal Operator 99) teams-up with Joyce Kingston to thwart the plans of escaped crime boss Jim Belmont.

An expedition arrives on an uncharted jungle island to rescue the local natives, led by a jungle boy, from a volcano that is about to erupt.

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.

When his boss is killed, Detroit cop Axel Foley finds evidence that the murderer had ties to a California amusement park called Wonder World....

A master thief coincidentally is robbing a house where a murder—in which the President of the United States is involved—occurs in front...

After a treacherous attack, Secret Service agent Mike Banning is charged with attempting to assassinate President Trumbull. Chased by his own...

A police detective is caught up in a plot to steal two million dollars in bonds.

Only Episode 7, "The Hooded Helper," of this 20-Episode Serial is known to survive. All other episodes are believed to be lost.