The Hardy Boys stumble across a twisted technological plot creating perfect replicas of human beings for the survival of a top secret government intelligence organization.

The Hardy Boys tangle with an international terrorist killer and a secret government agency called the Network.

After the kidnapping of the Hardy Boys' father, criminals hold New York City ransom under the threat of a city-wide fatal virus.

A daring million-dollar bank robbery leads the Hardy Boys to undercover work on the secluded campus of an exclusive prep school.

Frank Hardy's girlfriend Callie mistakenly recovers a top-secret codebook and involves them in a network of fraud, corruption, and murder.

When Bayport is hit by a rash of vicious pranks, Frank and Joe investigate.

Frank and Joe fly to Alaska to trace Scott Sanders, who's supposed to be working on a top-secret project for a mining firm. When company officials claim they've never heard of Scott, the Hardys grow suspicious. They find that some company managers have been selling jobs on the oil pipeline. But before the brother detectives can dig deeper, they're kidnapped and forced to bail out over the arctic wilderness. Stranded, Frank and Joe face their toughest...

The Hardy Boys travel to England to investigate a death threat against Jed Shannon, a young American movie star. A beautiful British actress befriended by Jed suddenly disappears and the key to the mystery lies in her resemblance to a missing emerald heiress. The boys must travel to Castle Fear to solve the mystery and rescue the damsels in distress.

The Hardys pay a visit to Bayport's newest martial arts school and find that someone's trying to run the place out of the neighborhood.