Hardy boys mystery stories

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The secret agent of flight 101

1967
Frank and Joe get involved with SKOOL in order to find their missing father.

Wipeout

1989
Frank and Joe investigate a strange set of "accidents" that threaten to put champion wind surfer Doug out of the competition.

The serpent's tooth mystery

1988
Frank and Joe visit the zoo where they find herpetologist Dr. Michaels collapsed from a snakebite and the new exhibit of Australian poisonous snakes stolen.

The demon's den

1984
The Hardy boys, vacationing in Vermont, offer to help the police locate a missing camper and find themselves involved with a doomsday cult, a deadly strain of bacteria, and possibly the devil.

The treasure at Dolphin Bay

1994
At the world-famous dolphin research center in Hawaii, the Hardys learn that a dolphin has a mysterious injury and one of the researchers has disappeared.

The twisted claw

The secret of the old mill

A figure in hiding

Frank and Joe investigate a walled estate guarded by savage dogs, where a businessman is hiding in fear of his life.

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