Book 103


Book 104

Tricks of the Trade

by Franklin W. Dixon

Published 1 January 1990
When Frank and Joe attend a magic seminar, coins and rabbits aren't the only things vanishing into thin air. Valuable items start disappearing from the hotel safes--and the teen sleuths are in the middle of a magical mystery. If they don't crack this case soon, the Hardy Boys may vanish, too--permanently!

Book 105


Book 106

Joe Hardy has set his sights on the $50,000 prize money awaiting the winner of the challenge sponsored by the makers of the hottest, coolest video games, Hack Attack, but when a cartridge is stolen, the Hardy boys suspect that the game has been rigged.

Book 106


Book 107

Panic on Gull Island

by Franklin W. Dixon

Published 1 January 1991
Terror is sweeping across the peaceful resort community of Gull Island, Florida, and Frank and Joe may be too late to stop it. A rash of robberies and acts of vandalism have sent many residents fleeing, leaving a greedy real estate agent to gobble up their properties at low rates. And when Joe's girlfriend is kidnapped, they know they're up against a dangerous mob of gangsters.

Book 108

Fear on Wheels

by Franklin W. Dixon

Published 1 January 1991

Book 109

The Prime-Time Crime

by Franklin W. Dixon

Published 1 August 1991
As part of a school project, the Hardy boys are in Manhattan to observe a criminal trial. What they see is a major case of law-and disorder. Accused of attempted murder, defendant Nick Rodriguez appears to have a one-way ticket to prison. But Frank and Joe think he's being railroaded, and they're out to prove him innocent.

Book 110

Secret of Sigma Seven

by Franklin W. Dixon

Published 1 January 1991
The aliens are invading! No, they're not from another galaxy. They're not even from Mars. They're from Hollywood! A science fiction convention has come to Bayport, and movie director Simon Devoreaux has lost his billion-dollar baby: the film of his latest blockbuster has dematerialized before his eyes.

Book 111

The Hardy boys never dreamed they'd be swinging for their lives on the circus's flying trapeze, but that's exactly what happens when their pal Chet Morton discovers a college for clowns. But Frank and Joe have no time for clowning around, for they've intercepted a coded message that may turn the greatest show on earth into a carnival of crime.

Book 112

Demolition Mission

by Franklin W. Dixon

Published 1 February 1992
The Hardy boys have been invited to attend the Bayport Motor Speedway to test-drive the prototype of a world-class sports car. But when the high-performance racer vanishes without a trace, Frank and Joe's investigation leads to the demolition derby, where they run head-on into danger.

Book 113


Book 114

After Joe's high tech Wombat running shoes blow out during a 100-meter dash, the boys' investigation at a local sporting goods store produces flying fists and swinging bats--all aimed at the Hardys.

Book 116

Rock 'n' Roll Renegades

by Franklin W. Dixon

Published 1 January 1992
Hard rock radio WBBX Bayport has a new disc jockey, and he calls himself Joltin' Joe Hardy. The spot is hot - in more ways than one: Joe's part time job is fast turning into a full-time fight for survival. A pirate broadcaster, Skull and Bones Radio, is muscling in on WBBX, jamming the station's signal and threatening to knock it off the air.

Book 117


Book 118


Book 123

The Robot's Revenge

by Franklin W. Dixon

Published 1 January 1993
The Hardy's invention, Roger the Lobber, an automatic tennis ball retrieval and return unit, has been stolen from the Teen Inventor's Club competition and then reappears without warning, transformed into a device of danger.

Book 124

Frank and Joe become bodyguards to a rock star--and find themselves on the trail of danger with a rock 'n' roll beat!

Book 126

Joe Hardy makes the cut in Southern California's Mountain Annihilator mountain bike competition, and discovers that someone is serious about eliminating the competition.

Book 129

Frank and Joe are in Hawaii at a dolphin research center, where they discover that one of the dolphins has suffered a suspicious injury and one of the researchers has vanished.