If you're interested in the (modern) history of spycraft I highly recommend Allen Dulles 'The Craft of Intelligence':

http://www.amazon.com/Craft-Intelligence-Legendary-Fundament...

It was written by the first CIA director in the 1950s and is part memoir and part look into the structure of the early intelligence world.

I find looking back at the beginning of something is necessary to understand the current state and this book lays a good foundation for understanding how the CIA grew and evolved. It's particularly interesting how even back then it started out of paranoia and suspicion of all ideas that were an affront to the American Dream. More than just out of simply the need for a national defense mechanism.

Famous operations sound quite different from the perspective of the leaders who ran them. Than what you might find in the media or documentaries.

https://en.wikipedia.org/wiki/Allen_Dulles