Once again, Erik Larson has written an excellent non-fiction book which reads like a novel. I had planned to review it for you, but Melissa did such an excellent job that I think you should go read her review! Once you've finished that, go out and read the book!
I ordered Larson's next book, In The Garden of Beasts, which tells the story of the American ambassador as the Nazi party rises to power in Germany. It looks fantastic.