Franklin W Dixon

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

Trying to "steal" a top-secret invention before the real thieves can get it, put the boys on the trail of a gang of jewel theives and smugglers.

Teenagers Frank and Joe Hardy are supposedly 'retired' from their detective work. But there is a new mystery in Bayport that needs their investigative expertise - and fast! Starting with a bank heist, a series of alarming pranks have popped up around Bayport. Ultimately harmless, the pranks turn out to be the work of Seth Diller, an amateur filmmaker who plans to make 'zillions' from his reality-horror flick, which he'll use to help out his brother,...