- : The hardy boys - The sting of the scorpion (No:1960)
Book No. 58 - :
- : 978-0-448-08958-4
- : During Mr. Hardy’s investigation of a ruthless gang of terrorists, Frank and Joe witness an explosion in the sky near an airborne dirigible owned by Quinn Air Fleet. The young detectives look into a clue that takes them into a new animal park outside Bayport, where they are lured into a trap by an unknown enemy. Problems arise for the park owner as he receives pressure from a competitor and a real-estate firm to sell out. Strange occurrences at the park also frighten the visitors and animals. Frank and Joe take up the case despite fore warnings.
- : 9 -14 Yrs
in
- : The hardy boys - The firebird rocket (No:1959)
Book No. 57 - :
- : 978-0-448-08957-7
- : The launching of the Firebird Rocket is endangered when a famous rocket scientist disappears without a trace on his way to the Woomera Monitoring Station in Australia. Assigned to the case, Fenton Hardy tells his sons he needs their help. And Frank and Joe must turn down a request that they find the missing son of a prominent senator. With courage, wit, and clever detective work, the young detectives begin to close in on the enemy, only to discover that the tables have been turned. Captured by their cunning adversaries, the Hardys face certain death! Will they escape? Will the Firebird Rocket ever be launched?
- : 9 -14 Yrs
in
- : The hardy boys - The jungle pyramid (No:1958)
Book No. 56 - :
- : 978-0-448-08956-0
- : A million dollars’ worth of gold bullion has been stolen from the Wakefield Mint under strange circumstances. Mr. hardy is asked to investigate but before long his life is threatened, and he asks Frank and Joe to help him. The boys fly to Zurich, Switzerland, hoping to get information at the Swiss Gold Syndicate and to find the man who has stolen a valuable ancient gold figurine from a New York museum. Their search on both counts seems futile as they return to the United States where they uncover clues that lead them to an adventure in the Yucatán jungle. But the Hardy’s travels lead to nothing but new doubts and nagging suspicions. And now their lives are in danger.
- : 9 -14 Yrs
in
- : The hardy boys - The witchmaster's key (No:1957)
Book No. 55 - :
- : 978-0-448-08955-3
- : The Hardy boys' investigation of a museum robbery in England arouses the anger of a coven of black witches.
- : 8 -14 Yrs
in
- : The hardy boys - The mysterious caravan (No:1956)
Book No. 54 - :
- : 978-0-448-08954-6
- : When the Hardy Boys take a winter vacation in Jamaica, Joe finds an ancient bronze death mask washed up near their beach house during a violent storm. Helping the Hardys and their friends in this bizarre mystery is William, a Jamaican boy, who flies to New York with startling news, only to be intercepted and held for ransom—the death mask! Frank and Joe must rescue William, plunge into their father’s airline-ticket theft case, and fly into a maze of danger in Africa.
- : 9 -14 Yrs
in
- : The hardy boys -The clue of the hissing serpent (No:1955)
Book No. 53 - :
- : 978-0-448-08953-9
- : Why is a wealthy sportsman so frightened by the serpent design on a mysterious balloon that he begs Frank and Joe Hardy to protect him? And who stole the ancient life-size chess king which is to be presented to the winner of the world chess championship? Targets of diabolical enemies, Frank and Joe find a clue that leads them across the Pacific to Hong Kong to help the police smash an international criminal organization.
- : 8 -14 Yrs
in
- : The hardy boys -The shattered helmet (No:1954)
Book No. 52 - :
- : 978-0-448-08952-2
- : Danger is the name of the game when the Hardys agree to help their pen pal from Greece, Evan Pandropolos, search for a priceless, ancient Greek helmet. Years ago, Evan’s uncle had loaned it to Hollywood movie company for use in a silent motion picture, but the treasured helmet had been lost. Picking up foes along the way, the young detectives unearth clues that keep them constantly on the move—from their Greek college campus to California and finally to Greece.
- : 8 -14 Yrs
in
- : The hardy boys - The Masked Monkey (No:1953)
Book No. 51 - :
- : 0-448-08951-3
- : Frank and Joe are called upon to find a wealthy industrialist’s son who has mysteriously disappeared. The only clue in the case leads the two young detectives to South America, where the intrigues of evil adversaries almost cost them their lives. Only through their courage and perseverance do the Hardys solve one of the toughest cases they have ever tackled.
- : 9 -14 Yrs
in
- : The hardy boys - Danger on vampire trail (No:1952)
Book No. 50 - :
- : 978-0-448-08950-8
- : An assignment form their famous detective father to track down a ring of credit-card counterfeiters takes Frank and Joe Hardy on an exciting camping trip to the Rocky Mountains. But the cross-country trek with their pals Chet Morton and Biff Hooper is jinxed from the very first day. Strange happenings on a nearly impassable mountain lure Frank, Joe, Chet, and Biff to almost certain death before they discover the sinister reason for the danger on Vampire Trail.
- : 9 -14 Yrs
in
- : The hardy boys - The bombay boomerang (No:1951)
Book No. 49 - :
- : 978-0-448-08949-2
- : Frank and Joe Hardy become involved in a case affecting national security when Joe dials a wrong telephone number and gets the Pentagon. Two words— “Bombay Boomerang”— that the boys hear before the line goes dead plunge them into a whirlpool of danger and intrigue. At the same time, Frank and Joe must save their father from a murderous gang stealing mercury shipments in the Baltimore harbor. With clues linking the mercury thefts to the top secret Super S missile mysteriously stolen from a government arsenal. In a race against time, the three Hardys foil a diabolical scheme to create widespread havoc in the United States.
- : 9 -14 Yrs
in
