Series
165 books in this series.
The Tower Treasure
Franklin W. Dixon
The House on the Cliff
The Secret of the Old Mill
The Missing Chums
Hunting for hidden gold
The Shore Road Mystery
The Secret of the Caves
The Mystery of Cabin Island
The Great Airport Mystery
What Happened at Midnight
While the Clock Ticked
Footprints Under the Window
The Mark on the Door
The Hidden Harbor Mystery
The Sinister Sign Post
A Figure in Hiding
The Twisted Claw
The Disappearing Floor
Mystery of the Flying Express
The Short-Wave Mystery
The Phantom Freighter
The Secret of Skull Mountain
The Secret of Wildcat Swamp
The Crisscross Shadow
The Hooded Hawk Mystery
The Clue of the Screeching Owl
The Mystery of the Aztec Warrior
The Haunted Fort
The Secret Agent on Flight 101
Mystery of the Whale Tattoo
Danger on Vampire Trail
Masked Monkey
The Clue of the Hissing Serpent
The Mysterious Caravan
The Jungle Pyramid
The Sting of the Scorpion
Night of the Werewolf
Mystery of the Samurai Sword
The Pentagon Spy
The Apeman's Secret
The Mummy Case
Mystery of Smugglers Cove
The Stone Idol
The Vanishing Thieves
The Outlaw's Silver
The Four-Headed Dragon
The Infinity Clue
VOODOO PLOT
The Billion Dollar Ransom
Tic-Tac-Terror
Trapped at Sea
Game Plan for Disaster
The Crimson Flame
Cave-In
Sky Sabotage
The roaring river mystery
The Demon's Den
The Blackwing Puzzle
The Swamp Monster
Revenge Of The Desert Phantom
The Skyfire puzzle
The Mystery of the Silver Star
Program for Destruction
Tricky Business
Sky Blue Frame
Danger on the Diamond
Shield of Fear
The Shadow Killers
The Serpent's Tooth Mystery
Breakdown in Axeblade
Danger on the Air
Wipeout
Cast of Criminals
Spark of Suspicion
Dungeon of Doom
The Money Hunt
Terminal Shock
The Million Dollar Nightmare
Tricks of the Trade
Smoke Screen Mystery
Attack of the Video Villains
Panic on Gull Island
Fear on Wheels
The Prime-Time Crime
The Secret of Sigma Seven
Three-Ring Terror
Demolition Mission
Radical Moves
The Case of the Counterfeit Criminals
Sabotage at Sports City
Rock 'N' Roll Renegades
The Baseball Card Conspiracy
Danger in the Fourth Dimension
Trouble at Coyote Canyon
The Case of the Cosmic Kidnapping
The Mystery in the Old Mine
Carnival of Crime
Robot's Revenge
Mystery with a Dangerous Beat
Mystery on Makatunk Island
Racing to Disaster
Reel Thrills
Day of the Dinosaur
The Treasure at Dolphin Bay
Sidetracked To Danger
Crusade of the Flaming Sword
Maximum Challenge
Crime in the Kennel
The Hypersonic Secret
The Cold Cash Caper
High Speed Showdown
The Alaskan Adventure
The Search for the Snow Leopard
Slam Dunk Sabotage
The Desert Thieves
Lost in Gator Swamp
The Giant Rat of Sumatra
The Secret of Skeleton Reef
Terror at High Tide
The Mark of the Blue Tattoo
Trial and Terror
The Ice Cold Case
The Chase for the Mystery Twister
The Crisscross Crime
The Rocky Road to Revenge
Danger in the Extreme
Eye on Crime
The Caribbean Cruise Caper
The Hunt for the Four Brothers
A Will to Survive
The Lure of the Italian Treasure
The London Deception
Daredevils
A Game Called Chaos
Training for Trouble
The End of the Trail
The Spy That Never Lies
Skin & Bones
Crime in the Cards
Past and Present Danger
Trouble Times Two
The Castle Conundrum
Ghost of a Chance
Kickoff to Danger
The Test Case
Trouble in Warp Space
Speed Times Five
Hide-and-Sneak
Trick-or-Trouble
In Plane Sight
The Case of the Psychic's Vision
The Mystery of the Black Rhino
Passport to Danger
Typhoon Island
Double Jeopardy
The Secret of the Soldier's Gold
Warehouse Rumble
The Dangerous Transmission
Wreck and Roll
Hidden Mountain
No Way Out
Farming Fear
One False Step
Motocross Madness
The Hardy Boys Detective Handbook
