This was an engrossing story that told a side of the American code breaking efforts centering on the contributions of Elizabeth Friedman and her husband and the evolution that gave birth to the NSA.

I loved seeing how strong the Friedman's love for each other was and how passionate they were about code breaking. Was tragic to hear about William's struggles with depression.

The spy craft and awareness of operational security were fascinating. And the duplicity of Hoover's FBI stealing credit for Elizabeth's work and also undermining it through terrible opsec is maddening!

And hearing about the eccentric beginnings that started with privately funded "decoding" and later debunking of the bogus Shakespearean Ciphers makes them both skeptical heroes in their own right.