The 5th in The 39 Clues series, this book takes Dan and Amy Cahill to Russia where they learn about yet-another-famous-relative, Anastasia, the last surviving member of the ruling Romanov family.

This series is great as far as getting kids hooked and reading. It also throws in some history and culture at the same time. But each book in the series is written by a different author. I loved the first book which was authored by Rick Riordan. This one is written by Patrick Carman and I found the writing to be a bit juvenile. Dan and Amy Cahill are children, but he spends too much time talking about their eating habits (basically junk food) and child-like behavior. It was almost condescending, especially since these kids have managed to thwart villains and solve puzzles all over the world. They are smart and capable protagonists, so the emphasis on child-like behavior seems out of place. Still a fun plot and as always, you're left wanting to grab the sequel.