Curse of the Ancient Emerald
Franklin W. Dixon
Hardy Boys Adventures (9)
Danger in the Extreme
The Hardy Boys (152)
Danger in the Fourth Dimension
The Hardy Boys (118)
Danger on the Air
The Hardy Boys (95)
Danger on the Diamond
The Hardy Boys Mystery Stories (90)
Danger on Vampire Trail
The Hardy Boys (50)
Danger Unlimited
The Hardy Boys Casefiles (79)
Danger Zone
The Hardy Boys Casefiles (37)
The Dangerous Transmission
The Hardy Boys (184)
Daredevils
The Hardy Boys (159)
Darkness Falls
The Hardy Boys Casefiles (89)
Day of the Dinosaur
The Hardy Boys (128)
Dead in the Water
The Hardy Boys Casefiles (127)
Dead on Target
The Hardy Boys Casefiles (1)
The Dead Season
The Hardy Boys Casefiles (35)
Deadfall
The Hardy Boys Casefiles (60)
The Deadliest Dare
The Hardy Boys Casefiles (30)
Death and Diamonds
Hardy Boys: Undercover Brothers (15)
Deathgame
The Hardy Boys Casefiles (7)
Deception on the Set
Hardy Boys Adventures (8)
Deep Trouble
The Hardy Boys Casefiles (54)
The Demolition Mission
The Hardy Boys (112)
The Demon's Den
The Hardy Boys (81)
Deprivation House: Book One in the Murder House Trilogy
Hardy Boys: Undercover Brothers (22)
The Desert Thieves
The Hardy Boys (141)
Dirty Deeds
The Hardy Boys Casefiles (49)
The Disappearance
Hardy Boys Adventures (18)
The Disappearing Dog
Franklin W. Dixon & Scott Burroughs
The Hardy Boys: Secret Files (7)
The Disappearing Floor
The Hardy Boys (19)
Disaster for Hire
The Hardy Boys Casefiles (23)
Double Deception: Book Three in the Double Danger Trilogy
Hardy Boys: Undercover Brothers (27)
Double Down: Book Two in the Double Danger Trilogy
Hardy Boys: Undercover Brothers (26)
Double Exposure
The Hardy Boys Casefiles (22)
Double Jeopardy
The Hardy Boys (181)
Double Trouble: Book One in the Double Danger Trilogy
Hardy Boys: Undercover Brothers (25)
Dungeon of Doom
The Hardy Boys (99)
Dungeons & Detectives
The Hardy Boys Adventures (19)
Edge of Destruction
The Hardy Boys Casefiles (5)
The Emperor's Shield
The Hardy Boys Casefiles (119)
The End of the Trail
The Hardy Boys (162)
Endangered Species
The Hardy Boys Casefiles (64)
Evil, Inc.
The Hardy Boys Casefiles (2)
Extreme Danger
Hardy Boys: Undercover Brothers (1)
Eye on Crime
The Hardy Boys (153)
Farming Fear
The Hardy Boys (188)
Fast Break
The Hardy Boys Casefiles (107)
Fear on Wheels
The Hardy Boys (108)
Feeding Frenzy
Hardy Boys: Undercover Brothers (20)
A Figure in Hiding
Franklin W. Dixon & Stratemeyer Stratemeyer Syndicate
The Hardy Boys (16)
Final Cut
The Hardy Boys Casefiles (34)
Final Gambit
The Hardy Boys Casefiles (62)
The Firebird Rocket
The Hardy Boys (57)
The Flickering Torch Mystery
The Hardy Boys (22)
Foreign Exchange
The Hardy Boys Casefiles (25)
Forever Lost
The Lost Mystery Trilogy (3)
Fossil Frenzy
The Hardy Boys: Secret Files (14)
Foul Play
The Hardy Boys Undercover Brothers (19)
The Four-Headed Dragon
The Hardy Boys (69)
Frame-Up
The Hardy Boys Casefiles (99)
Galaxy X
Hardy Boys: Undercover Brothers (28)