Books in Hardy Boys Casefiles, No 3 series

A trio of mysteries includes Diplomatic Deceit, in which a gang of con artists run wild in Washington, D.C.; Flesh and Blood, in which the boys' best friend becomes a suspect; and Fright Wave, in which a champion surfer is targeted for murder. Original.

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Three complete casefiles. In "Trouble in the Pipeline", Frank and Joe are kidnapped and forced to bail out over the Arctic wilderness. A motorcycle racer needs their help to prove his innocence in "Nowhere to Run", and in "Countdown to Terror" they discover they are first on somebody's hit list.

Frank and Joe Hardy investigate when danger threatens Bayport's new self-defense school and find themselves up against a ruthless real-estate developer out to buy the building in which the school is located

Frank and Joe head north to Alaska to investigate union corruption on the Alaska pipeline and, in the course of their snooping, are held hostage by thugs and discover an international terrorist plot to destroy the world's oil supply

The young sleuths team up with their father on a desperate mission when a corrupt multinational corporation kidnaps Laura Hardy to weasel its spies into the top-secret Prometheus Computer Corporation, which Fenton Hardy has been assigned to safeguard

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The Hardys investigate on land and sea when Angus McCoy, a former world champion race car driver, crashes into Barmet Bay during the Bayport Grand Prix

When Bayport is hit by a rash of increasingly dangerous practical jokes in which their friend Biff may be involved, the Hardy Boys investigate a secret society led by a reputed hitman

The Hardy boys do not believe in ghosts, but some very convincing evidence is prowling the grounds of an old hotel, and the teen detectives are determined to uncover who is hiding behind the sheets