"A Spy Among Friends" by Ben Macintyre (2015)

The characters are portrayed shallow, glib, flippant, and drunk, perhaps, because they were shallow, glib, flippant, and drunk. While (purportedly) clubby and class-conscious circles of British spies are of little amusement to the outsider, the dynamics of their antagonists are not explored at all. The book reads as a history of a friendship, not its story.