The Lost Continent

A Man Inside

Daylight Robbery

River Rivals

Son of the Sahara

The Dragon's Secret

The Life of Galileo

The Secret Door

The Last Hope

The Conspirators

Operation Airlift

The Blockade Runners

Ambush

The Castaways

The Night Raiders

Five Have a Mystery to Solve

Whispering Island

Counter Plot

Trapped

The Ghost Army