The 39 Clues: Book 9BEHIND THE BLACK. The shadow of a man in black has followed fourteen-year-old Amy Cahill and her younger brother, Dan, on their worldwide search for the 39 Clues that lead to a great power. Amy and Dan know that the man in black has tried to kill them. They know he is a Madrigal, a member of the most secretive and terrifying gtoup hunting for the Clues. And they know something else, a secret they would rather...
(more)