The Clue of the Hissing Serpent, reviewed by Jared D.

The Clue of the Hissing Serpent is very mysterious because they have to work hard to find clues.
The main characters, Frank and Joe Hardy, are very serious. The mystery to be solved is to find out what the hissing serpent is and to stop it. I would recommend you read this book if you like a big mystery and like to solve them.