The 39 Clues - The Black Circle by Patrick Carman

A telegram brings Amy and Dan to Russia and away from Nellie, their au pair. The telegram leads them to uncover a stolen treasure by the Nazis and to find out the truth about the murder of the last royal Russian family. Amy and Dan still don't know if they can trust the person who signed the telegram, NRR. They start to get skeptical about whether this is a trap or not. Will Amy and Dan risk anything to find out what really happened the night their parents died?

I thought the book The 39 Clues - The Black Circle was a great book.  As soon as I read the cover I immediately wanted to read the book. I wanted to know everything about what really happened the night Amy and Dans parents died. This book had a lot of suspense. I wanted to know if they were being set up or if this NRR person was really going to help them. Amy and Dan start working with Hamilton Holt, one of their cousins, so it was nice meeting another character in the book and seeing what he was like. If you liked all the other 39 Clues books you will love this one.