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Type of bind: Hardcover
EAN num: 9780448089362
ISBN number: 044808936X
Label: Grosset & Dunlap
Manufacturer: Grosset & Dunlap
Quantity: 1
Page Count: 192
Printing Date: January 01, 1957
Publishing house: Grosset & Dunlap
Age index: Ages 9-12
Sale Popularity Level: 313908
Studio: Grosset & Dunlap
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Rated by buyers 
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In 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 countered.
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, with the help of their pals Chet Morton and Tony Prito, uncover a mystery involving an old Spanish cannon and a fabolous sunken treasure.
Rated by buyers -
It hardly seemed like I had started this story and it was over. Frank and Joe Hardy and their friends Chet Morton and Tony Prito encounter numerous ruthless criminals. The criminals are involved in scams, burglary, kidnapping, and even attempted murder! The criminals in this story are among the most vicious the Hardys have ever met.
The excitement begins immediately. Frank and Joe are scuba diving when they encounter a diver with a deadly aim. Frank and Joe escape, but their escape is narrow. Soon afterward the boys encounter a man named Bowden who asks the boys to search for a cannon called a demiculverin. As the boys search for the cannon they encounter others also looking for cannons and the others are very dangerous, injuring the boys and their friends more than once.
As the investigation continues criminals break into a local museum and steal swords. Unfortunately for the criminals the sword they really want is at the Hardy's home. The crooks eventually get the sword through a clever ruse.
The excitement heats up as the boys realize that Bowden may not be on the level. One of the more interesting aspects of this story is the number of crooks involved. We do not learn for sure who the good guys and the bad guys are until the very end of the story.
One intriguing aspect of the story is the research the author performed relating to cannons. The research appears to be accurate, based on a limited sampling on the internet, but the author had to do his research the good old-fashioned way, in the library. The unfortunate side effect of this research is that the author uses the technical name for the various cannons more than once, and words like demiculverin tend to slow the story when used too often.
This story seems to speed up as the story nears the end. The danger increases, and one of the criminals destroys a valued possession. Even as the Frank Hardy, Joe Hardy and Tony Prito try to keep from drowning, they still do not know whether the culprits are ready to pounce on the boys in the final exciting pages of this story.
The Hardy Boys series is recommended for ages 8 to 12 because the series is relatively tame for the previous target audience of ages 10 to 14. This particular book is a good fit for both age ranges. I think this Hardy Boys story is above average and I would recommend this story to a very first time reader of the Hardy Boys.
Rated by buyers 
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This book was not as good as the last one. It had less action and the mystery was dull.
Rated by buyers -
This is one of the best hardy boys books ever because Frank and Joe go looking for a cannon.They get followed,captured,and shot at.Three parties want the cannon,and will do anything to get it!
This is one of the best hardy boys books ever,and a must-have for any hardy boys fan!
Rated by buyers -
It all starts when Frank and Joe are skin diving just for the fun and thrills. Suddenly, in deep waters that flow near the foot of a place called Pirate's Hill, dander is always on their trail. A stranger in the waters with Frank & Joe threw a spear into Frank's air hose. This is putting the very lifes of the boys at stake. Read this story, vacuum - packed with thrill & suspence hanging with you at the of each chapter, and I promise this will be the book of your lifetime!!!
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