This is an excellent 2011 conspiracy thriller from the BBC. I ordered it primarily because of the actors: David Suchet (Poirot); and Glenister - thinking he was one of my favourites, Robert (Hustle) and not the actual actor, his brother Philip (Ashes to Ashes, Life on Mars.)
I especially enjoyed it because I had to pay attention. Not every fact and clue are presented in the simplified, overtly obvious, everything explained manner that many may be used to seeing. As the initial story of the solicitor and a mysterious woman unfolds, tales of rich moguls and political bigwigs plotting assassinations and cover-ups emerge. I certainly don't want to spoil anything; suffice to say, the final twists make one pause for thought.
This is not a high action, gory, sex-filled series. There are brief scenes of people being killed. At the beginning, a woman starts to unbutton her blouse but nothing happens and a bit later, a man lies covered in bed as he talks to a woman who's dressing - that's it for sex.
I've already watched this twice: once for me and again with friends who also enjoyed it. It's definitely one I'll watch again next year.