The Black Circle (The 39 Clues , Book 5)
Scholastic Press, August 2009. Hardcover. The highly anticipated Book Five of the #1 bestselling The 39 Clues series. A strange telegram lures fourteen-year-old Amy Cahill and her younger brother, Dan, deep into Russia and away from the only trustworthy adult they know. Signed with the initials NRR, the telegram launches.....