Trust no one fourteen year old Amy Cahill and her younger brother Dan head to the land down under discover what their own mother and father knew about the hunt for The 39 clues but following in their parents put stuff springs up lost memories for Amy so awful that she can't share them even with Dan haunted by the ghost of their past chased by deadly competitors Dan and Amy can't see who is the enemy and who is a friend they're blindness leads to a terrible mistake in the death of a hidden alley