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.

When the daughter of Bayport's amusement park owner goes missing, Joe and Frank follow clues to find the girl and determine if her disappearance is related to that of another missing person.

Frank and Joe's immersive murder mystery experience turns into a real missing person's 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.

When new team members are being kidnapped and threatened, Frank and Joe join the basketball team at the request of their principal to uncover the culprits.--

Frank and Joe continue to work undercover as part of teen movie star Justin Carraway's entourage as they try to solve the murder of a celebrity photographer.

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

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.

After Chet wins the ring joust and free tickets to the real joust at the King Arthur Faire, Frank and Joe are on the case when these tickets go missing.

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 over...