Newcomers to Bayport, young Frank and Joe Hardy find themselves searching through a spooky old house for a baseball mitt and finding instead a skeleton, a brain, and blood, all clues to an intriguing mystery. Original.

Frank and Joe are learning some awesome moves in karate class. But somebody steals Brian Ludlow's black belt signed by action-movie hero Jimmy Han. Brian even promised to bring Jimmy to class, but now he says, No way! But maybe if the Hardys can find the belt, they'll be the true-blue action heroes of the day!

When Joe identifies the classmate responsible for pulling the fire alarm during the Hardy's first day at Bayport Elementary, the other kids think Joe is a snitch, and Frank must come to his rescue. Original.

When the video tape of the basketball tryouts is stolen, Frank and Joe attempt to thwart the bandit using a clue-sniffing dog, a gob of green goop, and plenty of pizza. Original.

A master of special effects brings an exhibit of dinosaur movie models to Bayport Elementary only to find that the best of all—an iguanodon—is missing, leaving Frank and Joe Hardy with a monster of a mystery. Original.

When a book is stolen from the school library, and then turns up in Frank's backpack, the Hardys work to find the real thief and clear Frank's name, a situation that forces them to confront the school's worst bully. Original.

The Hardys' friend Mike Mendez says his new invention can turn people into animals. When he uses it in Chet's backyard, a golden retriever appears—one who has the same exact tastes as Chet!

Hoping to devise the best recipe for a creative pizza contest, Frank, Joe, and Chet go with something Chet dreams up, a recipe that is so outrageous that when it is stolen, none of them can remember the ingredients. Original.

Unable to move their snowman to the park to enter a snowman contest, Frank and Joe Hardy awake the next morning to discover that someone has done it for them, winning first prize and taking all the credit. Original.

A weekend camping trip to Lake Arrowhead with their friend Chet Morton and his family turns into a nightmare when Frank and Joe Hardy are forced to investigate the bizarre appearance of a mysterious prehistoric monster that supposedly lives in the lake. Original.

The Hardy boys and their best friend Chet stumble upon an old bottle containing a treasure map that could hold the key to a legendary pirate treasure from a ship that sank off the coast of Bayport some four centuries earlier. Original.

When Billy Magee, the clumsy new boy in Frank's class, is blamed for destroying two science fair projects, the Hardy boys race against time to find the real culprit before it is too late. Original.

Frank and Joe join the local ice hockey team, and after practice one day Joe is accused of stealing another skater's good luck charm. Can the Hardy brothers clear Joe's name?

It's Career Week at Bayport Elementary, and Frank and Joe's school assembly turns up some interesting guests. One student's uncle is an animal trainer who brings a chimpanzee. Another girl's father is an anthropologist who brings in a mask decorated with feathers and shells from a Pacific island. But when the assembly is interrupted by a fire drill, the mask is stolen and the Hardys spring into action.

Frank and Joe Hardy investigate a case of bicycle tampering at their neighborhood park.