Holt of the Secret Service

When his longtime partner on the force is killed, reckless U.S. Secret Service agent Richard Chance vows revenge, setting out to nab dangerous...

When Russian neo-nationalists hijack Air Force One, the world's most secure and extraordinary aircraft, the President is faced with a nearly...

A Martian invader crashes his spaceship conveniently close to the workshop of a scientist who is developing an interplanetary craft. If the...

Claire Forrest seeks her kidnapped scientist father, hidden somewhere on Mystery Island. He is held and forced to work on diabolical inventions by...

Dr. Ernst Grood , having already dominated the planet Ergro, now intends to take over the control of the Earth. Unfortunately for him, reporters...

Greedy traders have kidnapped a researcher, hoping he will reveal the location of a treasure in a hidden village. Family and friends of the...

A team of two-fisted insurance investigators (one of whom disguises himself as The Masked Marvel) endeavor to discover and thwart the loathsome...

Congo Bill is hired to locate an heiress lost somewhere in Africa.

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

After the harrowing death of his partner, forensic psychologist and best-selling author Alex Cross cannot forgive himself and has retreated to the...

Calvin Drake employs a group of low-lifes to drive away land owners along the path of a new railroad; Red Ryder opposes this strategy.

Tom King Jr. seeks to discover who murdered his father, a Texas Ranger; the trail leads to a network of Axis spies.