The Black Circle (The 39 Clues, Book 5)

A Game of Cat and Mouse!

A strange telegram lure 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 luanches a race to uncover a treasure stolen by the Nazis and the truth behind the murder of the last Russian royal family. All too soon, the treasure hunt starts to smell like a Lucian trap. But the bait might just be  irresistible ... what will Amy and an risk to find out what really happened on the night their parents died?