The 39 Clues series gets treacherous. and the death of a hidden ally.. .
Their blindness leads to a terrible mistake .
Haunted by the ghosts of their past, chased by deadly competitors, Dan and Amy can\'t see who is an enemy and who is a friend. even with Dan. . .
But following in their parents\' footsteps brings up lost memories for Amy so awful that she can\'t share them .
Fourteen-year-old Amy Cahill and her younger brother, Dan, head to the Land Down Under to discover what their own mother and father knew about the hunt for the 39 Clues. a friend? Book 6 in the bestselling The 39 Clues series challenges everything you thought you knew about the Clue race. . .
Could Amy and Dan\'s biggest enemy be .
Their enemies are becoming more vicious, and the truths they discover more crushing than ever.
Book 6 takes Amy and Dan across oceans on the trail of a famous aviator, but they find more than they\'re looking for.
The 39 Clues series gets treacherous