Just a reminder that the Le Carre series and movies/books/radio shows are essentially detective movies, rather than "James Bond".

Not always "who did it", but quite often, what the heck is going on, and how do we *prove* our suspicion using inaccessible/filleted files and people who are trained to lie and deceive? Evidence comes in in fragments and is sometimes the lie used to obfuscate, sometimes the truth which is the key to unlock the mystery... and sometimes both.