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9780671497231
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.Dixon, Franklin W. is the author of 'Demon's Den (The Hardy Boys Mystery Stories Series #81) - Franklin W. Dixon - Paperback' with ISBN 9780671497231 and ISBN 0671497235.
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