Book 47

Flight Into Danger

by Franklin W. Dixon

Published 1 January 1991
Titles include "Webster's New World Dictionary, Webster's New World Thesaurus" and "Words Most Often Misspelled and Mispronounced".

Book 48

Rock 'n' Revenge

by Franklin W. Dixon

Published 1 January 1991
Titles include "Flowers in the Attic, If There Be Thorns, Petals on the Wind"and "Seeds of Yesterday".

Book 49

Dirty Deeds

by Franklin W. Dixon

Published 1 January 1991
In this story, the Hardy brothers visit the wild west, where gold fever is running high and lives are at stake. By the author of Power Play.

Book 50

Power Play

by Franklin W. Dixon

Published 1 January 1991
Bright Futures Development has announced the invention of a powerful new solar energy cell, and the Hardy boys have gone undercover to protect it from industrial spies. Frank and Joe follow a trail of deceit and double-dealing and discover that the truth behind the solar power source is much darker than they suspected.

Book 52

Uncivil War

by Franklin W. Dixon

Published 21 May 1993

Book 53

Web of Horror

by Franklin W. Dixon

Published 1 July 1991
Frank and Joe dice with danger in this story, when they enter the world of horror movies - only to find that the fake fun soon turns to real terror.

Book 54

Deep Trouble

by Franklin W. Dixon

Published 1 January 1991
Titles include "The Great Pet Project, Super Duper Sleepover Party, My Two Best Friends" and "Lucky, Lucky Day".

Book 55

The Hardy brothers, Frank and Joe, are back for further adventures in this story.

Book 55

Beyond the Law

by Franklin W. Dixon

Published 1 September 1991

Book 56

Height of Danger

by Franklin W. Dixon

Published 1 January 1991
Frank and Joe find themselves in Austria at the World Snowboarding Championships, where the number-one competitor is the number-one target and sabotage is the name of the game.

Book 57

Terror on Track

by Franklin W. Dixon

Published 1 January 1991
Frank and Joe join Andrew Driscoll, the son of a professor, on a critical cross-country train ride. They are acting as decoys in a top-secret plan to transport a deadly virus from San Francisco to Chicago. But the plan goes wrong when Andrew disappears.

Book 58

Spiked!

by Franklin W. Dixon

Published 1 December 1991
At a Laguna Beach volleyball tournament, the Hardys are set to for sun and fun. But the games begin and murder takes to the court. The contest turns into a tournament of terror, and one competitor is killed. The Hardys will have to solve the case quickly before someone else takes a fall.

Book 59

Open Season

by Franklin W. Dixon and Maurice Dixon, Jr.

Published 1 January 1992
On a cross-country skiing trip into the Colorado Rockies, Frank and Joe find themselves facing the greatest challenge of all: survival. A woman dedicated to saving the endangered mountain lion has been shot, and the suspect is determined to track down the Hardy boys as well.

Book 60

Deadfall

by Franklin W. Dixon

Published 1 January 1992
In Crosscut, Oregon, the tension between pro- and anti-logging forces threatens to tear the town apart. The Hardys try to prove an environmentalist's innocence in the murder of a mill owner--but first they'll have to clear a path through chain saws, bulldozers, dynamite, and double-barreled shotguns!

Book 61

Grave Danger

by Franklin W. Dixon

Published 1 January 1990
Frank and Joe travel to Mexico to search for hidden secrets at an archaeological dig. When ancient artifacts are stolen from the site, the boys search for clues but discover they must be careful--or they could be buried alive.

Book 62

Final Gambit

by Franklin W. Dixon

Published 1 April 1992

Book 63

Cold Sweat

by Franklin W. Dixon

Published 1 May 1992
Frank and Joe discover that working out in Bayport's new superspa can be hazardous to their health--one patron winds up in the hospital and another is found dead. The boys suspect that underworld thugs are involved--the kind of thugs who stop pumping iron to start spraying lead.

Book 64


Book 65

No Mercy

by Franklin W. Dixon

Published 1 July 1992
After their father is killed by operatives of Phoenix Enterprises--a front for high-tech military equipment smugglers--the Hardys travel to Stockholm to avenge his death. Frank and Joe are ready to take any steps necessary to expose the truth, even if it involves going into the deadly heart of the Phoenix maze.

Book 66

Phoenix Equation

by Franklin W. Dixon

Published 1 August 1992
The final chapter of this exciting trilogy finds the Hardys facing their most dangerous mission ever as they avenge their father's death and stop an international espionage ring. Frank and Joe infiltrate Phoenix Enterprises to uncover the spy ring's mastermind, and find an unlikely ally--a young woman whose father--a Phoenix partner--was also murdered.