Dixon, Franklin W

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

The two young detectives solve a mystery involving a top secret government agency and a world-famous spy who wishes to defect to America.

When an important space mission is sabotaged at Cape Canaveral, the Hardy Boys are called in to investigate.

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 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 Hardys cover the murderous competition at a mountain bike race.

The Hardys are caught in the middle of a dispute between environmentalists and developers on a Maine island.

The Hardy Boys compete on a game show.

When the boys sign on to help prepare for opening day, they make a startling discovery: Not only are the dinosaurs incredibly lifelike... they are lethal.

Joe and Frank battle arsonists in the wilderness of Alaska's Denali National Park.