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Rarely do magicians reveal their professional secrets. Consequently, Frank and Joe Hardy are amazed when a well-known magician, the Incredible Hexton, offers to reveal the secret of his “Vanishing Man Act” and invites Mr. Hardy to be the subject. When their detective father fails to reappear, his sons are convinced that something sinister is afoot, despite Hexton’s insistence that Mr. Hardy is playing a joke on them. While desperately searching for their father, Frank and Joe find themselves working with SKOOL, a U.S. organization of secret agents pitted against UGLI, an international ring of spies stealing government secrets domestically and internationally. The young detectives’ gripping adventures culminate in a dramatic climax when they unmask the secret agent on Flight 101.
Hardcover, 176 pages (FREE shipping in the USA)
When their father, Fenton Hardy, takes part in a magic show and doesn’t reappear at the end of the “Vanishing Man Act,” Frank and Joe suspect foul play. Soon the brothers are working with a top-secret government organization of undercover law enforcers and battling an international spy ring.
This adventure begins when Pete catches a large fish with a mysterious tag on its tail. Then the children’s unhappy friend, Bobby Reed, disappears in a leaky old boat on the Muskong River, and the whole family helps in the search. Uncle Russ lends them his boat, the Sweetie Pie, and they all set off on an exciting trip down the river.
Frank and Joe are asked to help out their famous private detective father on his latest drug smuggling case, which sends them to an old house on a cliff to serve as lookouts. But when cries for help lure the boys inside the house, they realize they could be in more danger than they thought.
The Happy Hollisters are surprised to learn that a hobbyhorse they purchased at an auction holds the key to settling an inheritance that will change the future for their new friend, Graham Stone. The mystery deepens with the appearance of a beautiful appaloosa pony, seemingly out of nowhere.
When the Hardy Boys eagerly agree to assist their friend Jack Dodd and his father in locating a family treasure, the two young detectives are unaware of the baffling complications that will arise. Deadly road traps, aerial ambush, a spider man and a suspect who carries a menacing cane harass the young detectives as they seek the triple solution to this perplexing and exciting mystery.