The Hardy Boys

The Demon's Den by Franklin W. Dixon

The Demon's Den

The Hardy Boys #81

Franklin W. Dixon

200 pages • first pub 1984 (editions)

fiction middle grade mystery adventurous mysterious slow-paced
The Blackwing Puzzle by Franklin W. Dixon

The Blackwing Puzzle

The Hardy Boys #82

Franklin W. Dixon

208 pages • first pub 1984 (editions)

fiction middle grade mystery dark mysterious tense slow-paced
The Swamp Monster by Franklin W. Dixon

The Swamp Monster

The Hardy Boys #83

Franklin W. Dixon

192 pages • first pub 1985 (editions)

fiction middle grade mystery lighthearted mysterious slow-paced
Revenge of the Desert Phantom by Franklin W. Dixon

Revenge of the Desert Phantom

The Hardy Boys #84

Franklin W. Dixon

157 pages • first pub 1985 (editions)

fiction middle grade mystery challenging mysterious slow-paced
The Skyfire Puzzle by Franklin W. Dixon

The Skyfire Puzzle

The Hardy Boys #85

Franklin W. Dixon

158 pages • first pub 1985 (editions)

fiction middle grade mystery adventurous lighthearted mysterious slow-paced
The Mystery of the Silver Star by Franklin W. Dixon

The Mystery of the Silver Star

The Hardy Boys #86

Franklin W. Dixon

missing duration info • first pub 1987 (editions)

fiction middle grade mystery adventurous mysterious medium-paced
Program for Destruction by Franklin W. Dixon

Program for Destruction

The Hardy Boys #87

Franklin W. Dixon

180 pages • first pub 1987 (editions)

fiction middle grade mystery adventurous mysterious tense slow-paced
Tricky Business by Franklin W. Dixon, Anne Greenberg

Tricky Business

The Hardy Boys #88

Franklin W. Dixon, Anne Greenberg

160 pages • first pub 1988 (editions)

fiction middle grade mystery mysterious reflective slow-paced
Sky Blue Frame by Franklin W. Dixon

Sky Blue Frame

The Hardy Boys #89

Franklin W. Dixon

154 pages • first pub 1988 (editions)

fiction middle grade mystery mysterious slow-paced
Danger on the Diamond by Franklin W. Dixon

Danger on the Diamond

The Hardy Boys #90

Franklin W. Dixon

148 pages • first pub 1993 (editions)

fiction middle grade mystery adventurous mysterious reflective slow-paced