Frank and Joe find themselves on an uninhabited Caribbean island when they follow clues left by a gang of platinum thieves.

Timber wolves, a Rocky Mountain blizzard, and a mine cave-in are only a few of the perils Frank and Joe Hardy encounter during their search for t

After a dying criminal confesses that his loot has been stashed 'in the tower, ' the Hardy boys make an astonishing discovery.

When the Hardy boys reached the caves, they came unexpectedly upon a queer old hermit.

When the Hardy Boys set out to solve the mystery of their missing chums, they discover a gang hide-out in a cave on an island along the way.

A banker asks the Hardy Boys to solve the mystery of a secret room in an old deserted mansion.

The Hardy boys become involved in two mysteries when they attempt to track down a jewel thief and solve the intrigue surrounding an old estate.

"Join detective brothers Frank and Joe Hardy as they solve mysteries around Bayport! Readers can help solve each case as well with an interactive

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

When thieves hijack a collection of stuffed animals from a county auction, Frank and Joe Hardy pursue the getaway care and are drawn into a thril

Young Frank and Joe Hardy enlist the help of their friends to solve a mysterious case involving a large number of frogs.

A reenactment leads to the death of Bayport's biggest benefactor, and the Hardy Boys get involved, especially when a favorite teacher turns out t