This is a book which I was sorry to come to the end of and even sorrier that it is John le Carré's last book. It is a fitting end to his oeuvre, with a return to the Russians as a threat (but with a twist of course), but very much set in the present day with Brexit and Trump looming large. I did also enjoy the anti-Brexit rants, especially as it clearly gave the idea that it John le Carré himself speaking.

Just one thing I didn't get. What is it with the microfilm? Surely no-one uses that any more? Perhaps a joke?

As always with le Carré, the characters are expertly sketched, giving great depth in few words and the plot is frighteningly convincing.