Prince Paul, Jack, Peggy, Nora and Mike have come to Africa on what seems an impossible search. Yet they mustn't give it up because Captain and Mrs. Arnold have been kidnapped and taken to the Secret Mountain. But where is the mountain? And who...
While picking up a load of junk, the boys acquire a trunk from an old ship. A journal from a crewman is hidden in the trunk, giving clues to find a treasure that he hid before his...
What excitement for Mike, Jack, Nora and Peggy when they discover the secret caves and passages of Spiggy Holes! And when they find out that a kidnapped prince is being held captive in the old house above the caves, they're in the grips of...
What excitement for Mike, Jack, Nora and Peggy when they discover the secret caves and passages of Spiggy Holes! And when they find out that a kidnapped prince is being held captive in the old house above the caves, they're in the grips of...
Counterfeit money is in circulation, and the limit is reached when Mrs. Hardy takes some from a stranger. Then the Hardy boys and their high school chums are warned to stay away from the old mill. Their curiosity plunges them into peril of the...
After her best friend dies in a drowning accident, Suzy is convinced that the true cause of the tragedy was a rare jellyfish sting. Retreating into a silent world of imagination, she crafts a plan to prove her theory--even if it means traveling the...