Good start but all down hill from there.
possibly the biggest let down ever in tv?? The first series was excellent, interesting, and keeps you on the edge of your seat. Series 2 starts in the same fashion but then it's downfall begins. You quickly realise (at the same time really hoping it isn't true) that the writers do not know where they are taking the show. What results is a never ending spiral of nonsense, unresolved questions and a show that loses all it's credibility. We have seen this in many other shows such as prison break, heroes, etc. A successful show that is forced into churning out series after series by TV networks to make money and becomes an embarrassment to watch. If you want a good box set to watch just turn towards anything by HBO and see spectacularly written, acted and produced shows where quality and credibility comes first, not profit.