Could Amy and Dan\'s biggest enemy be . 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