During the the annual "Fun With Camping" event at Bayport State Park, Frank and Joe investigate when tent decorations start to go missing and they find mysterious footprints around the camp.

Frank and Joe investigate the legend of Whalebone Island when they receive a warning concerning a sunken freighter.

A chance meeting with a stranger on the road provides the Hardy brothers with a clue to a gang of local burglars.

Frank and Joe Hardy look for clues in this perplexing mystery.

The Hardy boys find the missing deed to an Indians' land, prevent a phony salesman from carrying through a reckless scheme, and help their father solve a top-secret case.

Valuable antique weathervanes are being stolen in the Pennsylvania Dutch country. A Navy employee removes a top secret document from the Pentagon. The Hardy brothers try to solve these two seemingly unrelated mysteries.

While on a cruise with their family, Frank and Joe investigate the theft of former pop idol Izzy's pocket watch.

Bayport High's Green Environment Conservation Club is camping on Black Bear Mountain, but the bears aren't the only danger--rumor has it that a madman with a taste for human flesh lurks in the nearby forest. When the campers awake one morning to find a bear roaming the campsite, they also find that their teacher is missing ... and blood is streaked across his tent. Frank and Joe go in search of him, but can they survive the dangers on the mountain?...

While Frank and Joe help their father locate a notorious jewel thief, they also explore the mysterious death of a tycoon's nephew years before.

The Hardy Boys travel to the southern U.S. to help a retired general find a fortune lost during the Civil War.