The missing playbook —Dixon, Franklin W., author.

The tower treasure —Dixon, Franklin W., author.

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

The video game bandit —Dixon, Franklin W., author.

A treacherous tide —Dixon, Franklin W., author.

"Frank and Joe are off to the Florida Keys to work alongside Lookout Shark Lab's Dr. E. Ella Edwards, one of the world's foremost marine biologists. On their first evening, Dr. Edwards paddleboards out to check on a lemo...

Bug-napped —Dixon, Franklin W., author.

"Detective brothers Frank and Joe search for a very special beetle"-- Provided by publisher.

Sea life secrets —Dixon, Franklin W., author.

Detective brothers Frank and Joe Hardy are on the case when a sea star goes missing during their school field trip to the Bayport Aquarium.

Return to Black Bear Mountain —Dixon, Franklin W., author.

Brother detectives Frank and Joe return to dangerous Black Bear Mountain to help locate a scientist gone missing from a remote research station.

Secret of the Red Arrow —Dixon, Franklin W., author.

Joe and Frank investigate some pranks around Bayport, leading them to the Red Arrow, a crime gang.

Dungeons & detectives —Dixon, Franklin W., author.

Frank and Joe Hardy search a mysterious castle for clues to a stolen, extremely valuable comic book.

The great airport mystery —Dixon, Franklin W., author.

The house on the cliff —Dixon, Franklin W., author.

Teenage detectives Frank and Joe Hardy investigate a supposedly haunted house reported to be the hangout of criminals.

Tunnel of secrets —Dixon, Franklin W., author.

When Frank and Joe set out to explore caves and tunnels, they dig themselves into some dark and dangerous trouble in this Hardy Boys adventure. When a sinkhole opens up and swallows one of Bayport's historic statues, Fra...

Who let the frogs out? —Dixon, Franklin W., author.

Detective brothers Frank and Joe work to solve a muddy mystery when the spring break Mud Bud Run is canceled due to a frog infestation.

Water-ski wipeout —Dixon, Franklin W., author.

The missing chums —Dixon, Franklin W., author.

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.

The time warp wonder —Dixon, Franklin W., author.

"Detective brothers Frank and Joe work to debunk a time travel machine before it's too late"-- Provided by publisher.

The curse of the ancient emerald —Dixon, Franklin W., author.

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 col...

The disappearance —Dixon, Franklin W., author.

aWhile at a comic book convention, the Hardy brothers and Frank's new girlfriend Jones meet up with Jones's online friend Harper, but when she disappears overnight, the brothers start looking into her life and uncovering...

The great pumpkin smash —Dixon, Franklin W., author.

Brothers Frank and Joe Hardy investigate strange occurrences during Bayport Zoo's annual Halloween party, Boo at the Zoo.

Scavenger hunt heist —Dixon, Franklin W., author.

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.