The name of the 10th 39 clues book is Into The Gauntlet.
the name of the 5th 39 clues book is the black circle
Into The Gauntlet
its out right now!
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Yep. They gather all the clues in Book 10.
The Viper's Nest
The Viper's nest
Beyond the Grave
The name of the sixth book is In Too Deep
Same as Book 10.