Some of the negative reviews here complain that the story moves too slowly. This is an espionage thriller in the likes of Tinker Tailor, the Spy who Came in From the Cold and other John Le Carre stories, it is not James Bond hence no car chases, explosions and CGI just a sold good (almost true) story.

I not that the American station dropped in after 2 episodes, probably due to the fact the lead cast is predominantly English, other than Stuart Milligan who has spent a lot of time in the UK in productions here, Johnathan Creek and Dr Who amongst others. So US audiences were probably miffed at this and turned off.

If you enjoyed TTSS then you will enjoy this but if you are looking for crash bang wallop CGI then no, you won't.