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 all but put the carnival out of business. Other unforeseen problems ensue when the teen-age sleuths become involved in their father's latest case. Fenton Hardy is tracking down a priceless ivory idol...

When they journey to Alaska to help a friend who feels his life is in danger, the Hardy brothers find their own lives threatened.

Their efforts to recover a stolen ancient chess piece lead the Hardy brothers to Hong Kong where they help smash an international criminal organization.

Frank and Joe travel to the south of France to help teen Village International rebuild a deserted town as a center for refugee children. But a local legend of a haunted castle and its lord who hid a fortune in diamonds within its thick stone walls, stirs up strange noises, spooky lights, and close shaves that convince the Hardys someone is trying to sabotage the project.

Frank and Joe shadow teen superstar Justin Carraway to figure out the identity of his mystery stalker before events turn deadly.

Frank Hardy goes missing while the brothers are investigating the disappearances of children in Misty Falls, Idaho.

The Hardy brothers' search for the missing son of a wealthy industrialist leads them to Brazil and great danger.

Frank and Joe try to solve a murder in Egypt possibly committed over a map to a precious golden mummy.