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The Demon's Den (Hardy Boys, #81)
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The Demon's Den (The Hardy Boys #81)

3.73 of 5 stars 3.73  ·  rating details  ·  75 ratings  ·  3 reviews
The Hardy boys, vacationing in Vermont, offer to help the police locate a missing camper and find themselves involved with a doomsday cult, a deadly strain of bacteria, and possibly the devil.
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Published by Minstrel (first published 1984)
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Riana
Frank and Joe Hardy are out fishing with their friends at a holiday cottage when they notice an unusual commotion at a local camping site and decide to investigate. Meanwhile, their father, the famous detective Fenton Hardy is trying to find a missing scientist who might be working on a dangerous project to create super athletes. The two boys travel the Canadian railways in attempt to get to the bottom of both cases!

I have clearly outgrown this youth detective series that I have enjoyed so thoro
...more
Sonja
Good book and easy to read. I think this was best of these The Hardy boys -books which I have read.
Haider Abbas
amazing cases of frank and joe love this one ......
Cws
JMAR5-Dix
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1879
Franklin W. Dixon is the pen name used by a variety of different authors (Leslie McFarlane, a Canadian author, being the first) who wrote The Hardy Boys novels for the Stratemeyer Syndicate (now owned by Simon & Schuster). This pseudonym was also used for the Ted Scott Flying Stories series.
More about Franklin W. Dixon...
The Tower Treasure (Hardy Boys, #1) The House on the Cliff (Hardy Boys, #2) The Secret of the Old Mill (Hardy Boys, #3) Hardy Boys Complete Series Set Books 1-66 (The Hardy Boys #1-66) The Missing Chums (Hardy Boys, #4)

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