The 39 Clues is unstoppable! The bestselling series returns
with an explosive new story arc.
The clock has run out for thirteen-year-old Dan Cahill. As head
of the Cahills, the most powerful family the world has ever known,
he and his older sister, Amy, have been in the crosshairs for too
long. Dan and Amy have always managed to stay a step ahead of their
enemies, but it was only a matter of time until luck failed
Now Dan is hopelessly trapped and nothing can save him. Nothing
except unleashing an evil into the world even worse than the
enemies closing in. As Dan hovers between life and death, Amy has a
terrifying decision to make. Just how far is she willing to go to
save her little brother?