The Hardy boys secret files

Hoping to win the pizza party grand prize on Field Day at Bayport Elementary, Frank and Joe Hardy investigate clues to discover who sabotaged the events.

Seven and eight year-old Frank and Joe Hardy solve this monstrous case with their friends.

Frank and Joe Hardy help their friend Phil design a roller coaster for the amusement park's contest, but when someone sabotages Phil's model on the day of the contest, Frank and Joe must investigate and find the culprit.

After losing the Junior Bike Rally because of a blown tire, Frank has more trouble when his bike is stolen.

When nine-year-old Frank and eight-year-old Joe Hardy find only a portion of a treasure map, they need to work with their friends to hunt down the rest so they all can find the treasure.

The Hardy Boys decide to investigate when it looks like the school talent show may be ruined by a prank involving raining frogs.