Well just about in time (for series 3) i finally have caught up and watched the complete series 2. It was bought for my birthday last July but then my dad spent just over 4 months months in hospital and i forgot about it. Anyhow when i started to see series 3 being advertised it gave me a kick up the backside and i got watching.
I thought overall that series 2 was better than series 1. I quite liked the theme of corruption in the force that ran through the entire series and it was a great innovation to have a sinister character also from the present messing with Alex's mind. The ending i thought was superb, perfect for another series to follow. My take on it is that Alex Drake is now in a coma in both the past and the present, unlucky girl

.
The one thing that seemed out of place and out of character was Chris employing deception and taking bungs. It just didn't fit with his character at all. And if he had taken a bung then Gene Hunt's reaction to it was also way out of character. He would have punched Chris's lights out and drummed him out of the force.
But nitpicking aside it was a very good series. And the bonus of only just having seen it for the first time is i have only got to wait a couple of days for series 3. Bring it on.