The Four-Headed Dragon (Hardy Boys Digest, Book 69)

The Hardy Boys Mystery Stories

Part of the series The Hardy Boys Mystery Stories

A Figure in Hiding
A Figure in Hiding (Hardy Boys, Book 16)
A Game Called Chaos
A Will To Survive
Cast of Criminals
Crime In The Cards
Crime in the Kennel
Crime in the Kennel (The Hardy Boys)
Cross-Country Crime
Danger on Vampire Trail
Daredevils
Day of the Dinosaur
Disappearing Floor
Disappearing Floor
Eye On Crime
Eye on Crime #153 (Hardy Boys (Sagebrush))
Fear on Wheels
Fear on Wheels (The Hardy Boys #108)
Footprints under the Window
GAME PLAN FOR DISASTER
Game Plan for Disaster
Game Plan for Disaster (Hardy Boys Digest, Book 76)
Ghost at Skeleton Rock (Hardy boys mystery stories / Franklin W Dixon)
Hunting for Hidden Gold
Hunting for Hidden Gold (Hardy Boys, Book 5)
Jungle Pyramid (Hardy Boys)
MYSTERY OF CABIN ISLAND
MYSTERY OF SMUGGLER'S COVE - Hardy Boys #62
Mystery of Smugglers Cove
Mystery of the Desert Giant
Mystery of the Flying Express (The Hardy boys mystery stories)
Mystery of the Samurai Sword
Mystery of the Whale Tattoo
Mystery of the samurai sword (Hardy Boys)
Night of the Werewolf
Secret Panel (The Hardy boys mystery stories)
Secret of Skull Mountain (Hardy boys mystery stories / Franklin W Dixon)
Secret of the Lost Tunnel (The Hardy boys mystery stories)
Short-wave Mystery (The Hardy boys mystery stories)
Sinister Signpost (Hardy boys mystery stories / Franklin W Dixon)
Skin & Bones
Slam Dunk Sabotage
Stone Idol
Submarine Caper
The Apeman's Secret
The Apeman's Secret (Hardy Boys, No. 62)
The Arctic Patrol Mystery
The Billion Dollar Ransom
The Billion Dollar Ransom (Hardy Boys, No 73)
The Bombay Boomerang
The Caribbean Cruise Caper
The Castle Conundrum
The Clue in the Embers
The Clue of the Broken Blade
The Clue of the Broken Blade (Hardy Boys, Book 21)
The Clue of the Hissing Serpent
The Clue of the Hissing Serpent
The Clue of the Screeching Owl
The Crimson Flame
The Crimson Flame (Hardy Boys Mystery Stories)
The Crisscross Shadow
The Dangerous Transmission
The Disappearing Floor
The Disappearing Floor
The End Of The Trail
The Firebird Rocket
The Firebird Rocket
The Flickering Torch Mystery (Hardy Boys, Book 22)
The Four-Headed Dragon
The Four-Headed Dragon (Hardy Boys Digest, Book 69)
The Ghost at Skeleton Rock
The Great Airport Mystery
The Great Airport Mystery (Hardy Boys, Book 9)
The Hardy Boys: The Mystery of Cabin Island
The Haunted Fort
The Hidden Harbor Mystery
The Hidden Harbor Mystery
The Hooded Hawk Mystery
The House on the Cliff (Hardy Boys, Book 2)
The Hunt for the Four Brothers
The Infinity Clue
The Infinity Clue (Hardy Boys, #70)
The Jungle Pyramid
The Mark on the Door
The Masked Monkey
The Melted Coins
The Melted Coins (Hardy Boys, Book 23)
The Million-Dollar Nightmare
The Missing Chums
The Missing Chums (Hardy Boys, Book 4)
The Mummy Case
The Mummy Case
The Mysterious Caravan
The Mystery at Devil's Paw
The Mystery of Cabin Island (Hardy Boys, Book 8)
The Mystery of the Aztec Warrior
The Mystery of the Chinese Junk/The Viking Symbol Mystery (Hardy Boys 39 & 42)
The Mystery of the Flying Express
The Mystery of the Spiral Bridge
The Outlaw's Silver
The Outlaw's Silver (Hardy Boys Series No. 67)
The Pentagon Spy
The Phantom Freighter
The Phantom Freighter (Hardy Boys, Book 26)
The Search for the Snow Leopard
The Secret Agent on Flight 101
The Secret Agent on Flight 101
The Secret Panel
The Secret Warning
The Secret Warning (The Hardy Boys)
The Secret of Pirate's Hill
The Secret of Skull Mountain
The Secret of Skull Mountain (Armada)
The Secret of Skull Mountain (Hardy Boys, Book 27)
The Secret of Wildcat Swamp
The Secret of the Caves
The Secret of the Caves
The Secret of the Lost Tunnel
The Secret of the Lost Tunnel (Hardy Boys, Book 29)
The Secret of the Old Mill
The Shattered Helmet
The Shattered Helmet
The Shore Road Mystery
The Short-Wave Mystery
The Short-Wave Mystery (Hardy Boys, Book 24)
The Sign of the Crooked Arrow
The Sign of the Crooked Arrow (Hardy Boys, Book 28)
The Sinister Signpost
The Skyfire Puzzle
The Sting of the Scorpion
The Sting of the Scorpion
The Stone Idol
The Submarine Caper (Hardy Boys #68)
The Tower Treasure
The Twisted Claw
The Twisted Claw (Hardy Boys, Book 18)
The Vanishing Thieves
The Vanishing Thieves (Hardy Boys Mystery Stories)
The Viking Symbol Mystery
The Viking Symbol Mystery (Hardy Boys, Book 42)
The Voodoo Plot
The Voodoo Plot (Hardy Boys Mystery Stories)
The Wailing Siren Mystery
The Witchmaster's Key
The Witchmaster's Key
The house on the cliff (Hardy boys mystery stories)
The secret of pirates' Hill
Tic-Tac-Terror
Track of the Zombie
Track of the Zombie
Training For Trouble
Trapped At Sea
Trapped at Sea
Trapped at Sea (The Hardy Boys #75)
Trouble Times Two
Twisted Claw
Viking Symbol Mystery
Warehouse Rumble
Warehouse Rumble (Hardy Boys (Sagebrush))
What Happened at Midnight
While the Clock Ticked
Yellow Feather Mystery (Hardy boys mystery stories / Franklin W Dixon)

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