Candace Fleming is a pretty big name in kids and teen nonfiction, so it's never a surprise when her books get good reviews. This was pretty interesting; I specifically enjoyed the way that Fleming broke down the code breaking and how it worked at the time. The ending about how long they had to keep these secrets was also nuts.

The pace of this one is good, and Fleming does a good job of drawing readers in. If you like this period of history, definitely check this one out!