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The Secret Warning (Hardy Boys #17)
by Franklin W. DixonThe Secret Warning (The Hardy Boys, No. 17)
Hardy Boys 18: The Twisted Claw (The Hardy Boys #18)
by Franklin W. DixonA series of museum thefts launch the Hardy Boys on this baffling mystery. Rare collections of ancient pirate treasure are being stolen, so Frank and Joe are asked to stake out the Black Parrot, a suspicious freighter docked in Bayport Harbor. This whirlwind chase after a self-styled pirate king in the Caribbean stronghold of the Empire of the Twisted Claw makes a gripping tale of suspense and high adventure.From the Hardcover edition.
Hardy Boys 19: The Disappearing Floor (The Hardy Boys #19)
by Franklin W. DixonOnce again Frank and Joe Hardy take on a puzzling case when their famous detective father asks the boys to assist him in tracking down a notorious jewel thief and his accomplices. The trail leads to the outskirts of the Hardys' home town and to a weirdly guarded mansion on the old Perth estate. With their pal Chet Morton, the brothers must tackle the mystery of the mansion heir's sudden death. A disappearing floor, a huge, savage-looking, hound, a galloping ghost, and a college professor's startling invention are just a few of the strange elements that complicate the boys' efforts to solve both mysteries.From the Hardcover edition.
Mystery of the Flying Express (Hardy Boys #20)
by Franklin W. DixonAfter the new hydrofoil they are guarding is stolen, the Hardy boys face frequent danger in solving a mystery involving criminals who operate by signs of the zodiac.
The Clue of the Broken Blade: The Clue Of The Broken Blade (The Hardy Boys #21)
by Franklin W. DixonWhile searching for the guard end of a broken saber that will solve one mystery, the Hardy brothers become involved with a gang of bank robbers.
The Flickering Torch Mystery (Hardy Boys #22)
by Franklin W. DixonWhen two suspicious plane accidents occur near an eastern airport, the two Hardy brothers investigate the case and find themselves in greater danger than they anticipated.
The Melted Coins: The Melted Coins (The Hardy Boys #23)
by Franklin W. DixonJoe faced Blackbeard across the table. The man was like a monster-hideously ugly, with a long black bushy beard. A knife and cutlass glittered menacingly in his belt.
The Short-Wave Mystery: The Short-wave Mystery (Hardy Boys #24)
by Franklin W. DixonWhen thieves hijack a collection of stuffed animals from a country auction, Frank and Joe Hardy pursue the getaway car and are drawn into a thrilling mystery. The recently acquired interest of their best pal, chubby Chet Morton, in taxidermy as a hobby adds fresh twists to the puzzle.
The Secret Panel (Hardy Boys #25)
by Franklin W. DixonAnother exciting mystery begins for Frank and Joe Hardy when they help a stranger who has had an accident with his car. The man introduces himself as John Mead, owner of a nearby estate. After he continues on his way, Frank finds an odd-looking house key which belongs to Mead. But when the Hardys try to return it, they learn that John Mead died five years ago! They are even more amazed when they find that the intricately carved doors in the dead man's deserted mansion have no visible knobs or keylocks. While working on this mystery, the boys assist their detective father in tracking down a highly organized ring of thieves who are robbing warehouses of television and stereo equipment.
Hardy Boys 26: The Phantom Freighter
by Franklin W. DixonWhen eccentric Thaddeus McClintock invites Frank and Joe Hardy to accompany him on a sea voyage, the teenage investigators become entangled in a web of mystery. Who is trying to block the three from securing reservation on freighter ships that carry passengers? The determined efforts of Frank and Joe lead to a hazardous game of wits with a ring of slippery smugglers and to a dramatic confrontation on the high seas. Here is an exciting, action-filled mystery that will keep the reader on edge with suspense.From the Hardcover edition.
Hardy Boys 27: The Secret of Skull Mountain
by Franklin W. DixonThere is a crisis in Bayport! Soon the city will be without water! Every night, water strangely disappears from the new reservoir near Skull Mountain. Frank and Joe Hardy join forces with a team of skilled engineers to solve the baffling mystery.From the Hardcover edition.
Hardy Boys 29: The Secret of the Lost Tunnel
by Franklin W. DixonDifficult assignments are nothing new to the Hardy boys and this one that takes them to the Deep South is particularly challenging. Their mission: to vindicate a long-dead Confederate general, disgraced during the Civil War because he was accused of stealing hidden gold belonging to a bank. Skillfully avoiding booby traps and flying bullets, the boys persevere in their perilous quest. The arduous search is full of surprises that will thrill all fans of the Hardy boys.From the Hardcover edition.
Hardy Boys 30: The Wailing Siren Mystery
by Franklin W. DixonStranded by a sudden storm at sea, the Hardy boys discover a wallet containing two thousand dollars. Upon returning home, they learn that a truck loaded with rifles has been stolen. Even though the two events seem unrelated, they are but the first clues in a complex mystery.
Hardy Boys 31: The Secret of Wildcat Swamp
by Franklin W. DixonAn invitation from Cap Bailey, science teacher at Bayport High, to accompany him out West to Wildcat Swamp on an archaeological expedition triggers off a series of dangerous events for Frank and Joe Hardy.<P><P> On their way West the boys and Cap have a near-fatal accident in a private plane which has been sabotaged. Though warned to leave the area, Frank, Joe, and Cap doggedly remain until they have caught the cunning ex-convicts they are up against in this swift-paced adventure.
Hardy Boys 32: The Crisscross Shadow
by Franklin W. DixonWhen a man selling leather goods door-to-door steals the key to their detective father’s file cabinet, Frank and Joe Hardy set out to track him down. An odd mark on a key case which the man sold to their mother leads the teenage sleuths to an Indian village, whose chiefs begs them to help him find valuable tribal possessions and the deed for his land. How Frank and Joe find the missing deed and Ramapan treasures, how they prevent the phony leather-goods salesman from carrying out a ruthless scheme and how they help their father solve the top-secret case he is working on for the U.S. government makes exciting reading for all fans of the Hardy boys.
Hardy Boys 33: The Yellow Feather Mystery
by Franklin W. DixonThe famous young detectives Frank and Joe Hardy are caught up in a dangerous web of intrigue when they agree to help Greg Woodson search for his grandfather’s missing will. When Henry Kurt, the temporary headmaster of Woodson Academy, insists that he is to inherit the property from Greg’s grandfather, the case becomes even trickier. Frank and Joe must risk their lives several times before they solve the mystery of Yellow Feather and trap a sinister criminal who will stop at nothing--even murder--to satisfy his greed for money.From the Hardcover edition.
Hardy Boys 34: The Hooded Hawk Mystery (The Hardy Boys #34)
by Franklin W. DixonThe young detectives receive a trained peregrine falcon as a gift that involves them in an exciting mystery. Imagine their astonishment when the swift-flying falcon brings down a homing pigeon carrying two precious rubies! Startling events that ensue indicate the gems are a ransom that has been paid for the release of a kidnapped student from India, who had come to the United States to complete his education. But Tava, the son of a wealthy industrialist, is still being held captive. Hoping to find a clue to Tava's whereabouts, the Hardys try to track down the owner of the ruby-bearing pigeon. Their every move, however, is thwarted by the dangerous criminals not only involved in the kidnapping, but also in the large-scale smuggling of aliens from India to the United States. How Frank and Joe eventually outwit their adversaries climaxes this thrill-packed mystery adventure.
Hardy Boys 35: The Clue in the Embers
by Franklin W. DixonTony Prito enlists the help of his detective friends Frank and Joe Hardy when a sinister stranger demands that Tony sell him the bizarre curio collection he has just inherited. While the boys are discussing this suspicious incident, the stranger, Valez, telephones and threatens Tony. That same afternoon the three boys collect the cases of curios at a freight station only for Joe's life to be at risk on their way back to Tony's house. The next day a seaman claims two medallions in the collection that coincidently go missing. Did Valez steal them? And what was their significance. Unraveling the clues in this exciting mystery takes the Hardys and their friends to a desolate region in Guatemala and straight into the hands of a gang of dangerous thugs.
Hardy Boys 36: The Secret of Pirates' Hill
by Franklin W. DixonIn a series of hair-raising adventures both on land and undersea the teenage brother detectives pit their wits against some of the most ruthless criminals they have ever encountered. It all starts when Frank and Joe are skin diving just for fun and the thrill of exploring the undersea world. Suddenly, deep in the waters that flow near the foot of Pirates' Hill, a mysterious skin diver fires a spear through Frank's air hose. From this moment on, danger is never far away. The very lives of the boys are at stake as they, along with the help of their pals, uncover a mystery involving an old Spanish cannon and a fabulous sunken treasure.
Hardy Boys 37: The Ghost at Skeleton Rock
by Franklin W. DixonA cryptic message from their famous detective father and a note concealed in a ventriloquist's dummy lead Frank and Joe Hardy on a dangerous search to the tropical islands in the Caribbean. There the teenage detectives are constantly beset by vicious henchmen of a criminal mastermind. Danger stalks the boys' every move, once in an isolated sugar mill, another time in a shark-infested sea. But when Frank and Joe come face to face with the ghost at Skeleton Rock, it will be as much of a surprise to the reader as it was to the young detectives themselves.
Hardy Boys 39: The Mystery of the Chinese Junk
by Franklin W. DixonThe Hardys purchase a Chinese junk to use as a ferry service, in order to make some money over the summer. It soon becomes apparent that others are very interested in the ship.
Mystery of the Desert Giant (Hardy Boys #40)
by Franklin W. DixonIn a search for the missing Willard Grafton, Frank Hardy and younger brother Joe, encounter a gang of criminals intent on defrauding the US government, and are lead across California and even into Mexico.
Hardy Boys 41: The Clue of the Screeching Owl
by Franklin W. DixonWhen dogs and men suddenly disappear, and strange screams fill the night, fantastic stories of vengeful ghosts are almost believable. It is these strange happenings which bring Frank and Joe Hardy to the Pocono Mountains to help their father's friendsolve the mystery of Black Hollow. But when the Hardy boys and Chet Morton arrive at Captain Thomas Maguire's cabin on the edge of the hollow, he has disappeared. Frank and Joe are determined to find the captain, despite Chet's misgivings after a night of weird and terrifying screams. Strangely, it is a small puppy that discloses a most unusual and surprising set of circumstances, involving a mute boy, an elusive hermit, and a fearless puma trainer.
Hardy Boys 42: The Viking Symbol Mystery
by Franklin W. DixonThe Canadian Northwest beckons Frank and Joe Hardy to mystery and adventure. It all starts when a French-Canadian trapper, Caribou Caron, makes a historical and valuable find–-a carved rune stone left by Vikings centuries ago near Great Slave Lake. When Caribou Caron attempts to sell the artifact to a representative of a museum, it is snatched by thieves. Like the intrepid Vikings of old, Frank and Joe, with their close pal Chet Morton, set off on a perilous quest in the Northwest Territories to recover the valuable artifact before the robbers can decipher the symbols leading to the buried treasure.From the Hardcover edition.
Hardy Boys 43: The Mystery of the Aztec Warrior
by Franklin W. DixonThe handwritten will of a deceased world-traveler is strange and mysterious. Its cryptic instructions are to deliver “the valuable Aztec warrior to the rightful owner, a descendant of an Aztec warrior.” Frank and Joe Hardy have only one slim clue to work with: the name of a complete stranger who can help. Despite the harassments, the threats, and the attacks made upon them, Frank and Joe unravel clue after clue in their adventure-packed search for the living descendant of the mighty Aztec nation which once ruled in Mexico. It takes as much high courage as clever deduction for the young detectives to defeat their ruthless foes and to decipher the fascinating secrets of the strange and mysterious will.