118/150 A fascinating look at the British and American effort to keep the Nazis from developing nuclear weapons. I've always enjoyed Kean's science books, and while this is mostly history, he does add an ample amount of physics. There is a large cast of characters, but it's easy to keep track of who's who. Like his science books, there are plenty of little know tidbits to keep the trivia minded (me) engrossed in the story. 4 ⭐⭐⭐⭐