Interesting retelling of the stories surrounding the female US code breakers of WW2. I learned some things about the war in the Pacific that I didn't know before. It was mostly straight-forward though: The stories of how (mostly) women were recruited to break ciphers for the army and the navy, some explanation on basic code breaking principles, embedded in the chronological development of the war and its effect on American society. I didn't like the audio version too much, to be honest. The narration was a little robotic and a bit slow for my taste. In retrospect, I think I would have preferred the paper version.