Teenage detectives Frank and Joe Hardy investigate a case of counterfeiting.

Joe Hardy is kidnapped by a gang of jewel smugglers as a warning for the Hardy Boys' father to stay away from their operation.

A series of bizarre events in their home town lead the Hardy Boys on a trail of robbers and kidnappers. Something is amiss in Bayport, the Hardy boys' hometown. First there is trouble in Shantytown, then a strange black craft tries to ram Joe and Frank's boat, the Sleuth. That night the local bank is robbed. And later that same night the young detectives' pals, Chet Morton and Biff Hooper, mysteriously disappear after a masquerade party. Are the...

Helping in a case their father is working on, the Hardy brothers try to find an informer who has telephoned from a booth in their home town, and are hired by a carnival owner to spot pickpockets. One exciting event follows another when Frank and Joe Hardy are hired to apprehend the pickpockets who have been plaguing Solo's Super Carnival. When their friends Tony Prito and Biff Hooper exhibit a stuffed whale dug up at a construction project, they...

Embarking on a class trip to Bayport Bear Park, Frank and Joe join in an exciting scavenger hunt before learning that the prizes slated for the winning team have been stolen or destroyed by an unknown culprit.

Frank and Joe must take the shine off a jewel thief who sends ominous riddles in this Hardy Boys adventure. First a priceless painting disappears from the museum; then two ancient samurai swords vanish from a private collection. A string of robberies has hit Bayport, and all signs point to the Phantom, a recently released ex-con who last struck more than twenty years ago. There's only one problem: the Phantom has vanished into thin air, and not even...

"In the Tennessee woods, a movie about a daring thief lands the Hardys in danger!"

THE LOCAL HALLOWEEN CONTEST IS TURNING INTO A REAL FRIGHT FEST! Bayport citizens are wild about the Merchant Association's new Halloween mystery contest. The prizes for winning include DVD players, a classic motorcycle, a boat, and even flying lessons! It's sure to be the biggest social event of the fall season. When big prizes are up for grabs, though, some people will do anything to win -- and it's up to the Hardys to keep the competition honest. As...

The search for missing gold takes the Hardy boys to the Yucatán Peninsula where they uncover a second mystery.

When a sinkhole opens up and swallows one of Bayport's historic statues, Frank and Joe suspect something--or someone--shady at play. They jump at the chance to investigate ; Joe as a member of an urban exploration club, and Frank as photographer for the school paper. But in the thick of their search, the boys stumble upon an entire underground city that's been abandoned for years. Now the city is home to a cultish band of criminals who plan to take...