- : The hardy boys - The twistes claw (No:1920)
Book No. 18 - :
- : 978-0-448-08918-8
- : A 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.
- : 8 -14 Yrs
in
- : The hardy boys - The secret warning (No:1919)
Book No. 17 - :
- : 978-0448-08917-1
- : Strange events involve Frank and Joe Hardy in a mystery which shrouds an ancient treasure—the golden head of the Pharaoh Rhamaton IV. The owner of the million-dollar golden Pharaoh’s head claims it was aboard the freighter Katawa, which sank not far from Whalebone Island. But suspicious developments indicate that Mehmet Zufar may be trying to defraud the shipping line’s insurance company.
- : 8 Yrs
in
- : The hardy boys - A figure in hiding (No:1918)
Book No. 16 - :
- : 978-0-448-08916-4
- : A blind peddler’s warning and a weird glass eye plunge Frank and Joe Hardy into one of the most baffling cases they have ever tackled. The young detectives’ investigation takes them to a walled estate guarded by savage dogs, where a wealthy businessman is hiding out in fear for his life. In a climax that will hold the reader spellbound with suspense, Frank and Joe find themselves trapped in a sinister house of mystery where there seems to be no escape!
- : 9 -14 Yrs
in
- : The hardy boys - The sinister signpost (No:1917)
Book No. 15 - :
- : 978-0-448-08915-7
- : In one of the most dangerous and intriguing cases of their careers, Frank and Joe Hardy help their father investigate a series of mysterious car accidents. Each of the drivers had seen a signpost marked DANGER shortly before his accident. The young detectives investigate, only to discover that the signposts have vanished. The attempted theft of a secret experimental motor and the kidnapping of a famous race horse are part of this thrilling case, which proves to be as sinister as the signposts themselves.
- : 9 -14 Yrs
in
- : The hardy boys - The hidden harbour mystery (No:1916)
Book No. 14 - :
- : 978-0-448-08914-0
- : The boys once again have jumped into the thick of a complicated mystery. Samuel Blacksone and his brother Ruel Rand live on adjacent properties, and it appears that one of them is out to hurt the other because they are both attacked. Frank and Joe soon learn that treasure is rumored to be hidden between the two properties, and as they investigate, they learn that others are involved in the apparent plot between the two brothers.
- : 9 -14 Yrs
in
- : The hardy boys - The mark on the door (No:1915)
Book No. 13 - :
- : 978-0-448-08913-3
- : In their motorboat the Sleuth Frank and Joe Hardy search Barmet Bay for a dangerous stranger who has stolen a valuable boat. Suddenly, in the eerie fog, they spot the craft drifting aimlessly out to sea. What happens next starts the young detectives and their pal Chet Morton on an intriguing adventure that takes them to Mexico and into the comparatively unexplored desert and mountain regions of Baja California.
- : 9 -14 Yrs
in
- : The hardy boys - Footprints under the window (No:1914)
Book No. 12 - :
- : 978-0-448-08912-6
- : A plot to steal a top-secret instrument vital to the United States space program poses a challenging case for Frank and Joe Hardy. After rescuing a South American stowaway who mutters a warning about “Footprints “ and then vanishes, Frank and Joe discover that documents belonging to their famous detective father are missing and that footprints linger under a window. The young detective’s search for the diabolical mastermind of the “Footprints” spy ring takes them on a flight to a group of islands off the coast of South America.
- : 9 -14 Yrs
in
- : The hardy boys - While the clocked ticked (No:1913)
Book No. 11 - :
- : 978-0-448-08911-9
- : A banker who has been receiving threatening notes enlists the help of the Hardy boys. Before long, the young sleuths find themselves entangled in the investigation of a notorious band of thieves.
- : 8 -14 Yrs
in
- : The hardy boys -The Disappearing Floor (No:1912)
Book No. 19 - :
- : 978-0-448-08910-2
- : Once 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.
- : 8 -14 Yrs
in
- : The hardy boys - The great airport mystery (No:1911)
Book No. 9 - :
- : 978-0-448-08909-6
- : Valuable electronic parts containing platinum are being stolen from shipments made by Stanwide Mining Equipment’s cargo planes, and Frank and Joe are called upon to assist their world-renowned detective father solve the baffling case. While posing as Stanwide employees, the boys look into the truth behind the chief pilot’s death at sea. The puzzling trail of clues leads the young sleuths to an uninhabited Caribbean island, but the final, and most startling, discovery is made in the boys’ home town of Bayport.
- : 9 -14 Yrs
in
