It's gripping, well crafted, actors are all top notch. The script is excellent in the fact that you always think you know what's coming and then the unexpected happens and you're flabbergasted. What I'm saying is, don't try to solve the puzzle, just let it reveal itself on its own.

The only thing I felt cheated on was how they made you think this show would have some deeper meaning, would make a comment on the current political and social situation in the UK, but then they decided to take the Hollywood exit. Which is fine, but it means that this series is no more memorable than the hundreds of other like it that have come and gone, it lost that bit of originality and meaningfulness. Still, it's a good thriller.