I enjoyed reading the book and a few years later I enjoyed listening to the unabridged audiobook. Now I've finally watched the TV series and enjoyed that as well. It really does the book justice. A nice bonus is that the picture quality of this BBC DVD is fantastic, a lot better than you usually get with an old TV series, maybe the best I've seen of all the old Brit TV shows from the 70s, 80s and 90s. The picture quality is massively better than similar series such as Smiley's People or Tinker, Tailor, Soldier, Spy. Those have the full complement of artefacts of analogue videotape with blown highlights, noisy shadows, poor sharpness, low resolution, muddy colours and so on. When enjoying A Perfect Spy one is not distracted from the content by the limitations of the medium or presentation. I can't imagine a series like this making it to the screen these days. The first two episodes (55 minutes each) would probably be wrapped up in 15 minutes or rendered as narrative destroying flashbacks over the entire series in a modern version, but actually all the detail and content matters, and fortunately it is brilliantly executed. Every texture and nuance and event early in the story has repercussions later on. There isn't the amazing pace of a modern TV series, instead you have flavour and lasting satisfaction. Many performances are exceptional, none are less than very good.