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 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.
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.
One of the best hardy boys books ever!
Published by Thriftbooks.com User , 21 years ago
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!
The Ultimate Review of the Hardy Boys
Published by Thriftbooks.com User , 21 years ago
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!!!
A super sweet book that keeps you guessing till the end!
Published by Thriftbooks.com User , 21 years ago
The secret of pirates hill was a good book.It is very excit- ing and thrilling.All the Hardy Boys books are great litera- ture.
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