Torchwood: Exit Wounds (Series 2)

I wasn't a big fan of the first series of Torchwood. Oh, it had some good episodes, and some really great moments, but on the whole the big problem was that we were faced with a team of characters who were, basically, pretty unlikable. Series Two dealt with this issue from the start, making the team more coherent and more sympathetic. All the problems that occurred in the first series (and the ones I had big difficulties with) were explained. Owen was no longer a prick; the ludicrous Jack/Ianto relationship finally was given some good reasoning as to why it happened; Gwen was no longer an unsympathetic bitch; the past was explained and Tosh wasn't quite so wet. Series Two fixed all the problems.
Then we get the final episode and oh, boy, if it isn't the most depressing thing I've seen in a long time. And I mean that in a good way. If this had been the finale to last years series, I would probably have thought "thank God". As it happens I didn't. I just cried.
The story is really kicked off from last week's episode as Captain John returns apparently to wreak havoc with Jack's brother, Gray, but lo it turns out Gray hasn't been quite so forgiving of the past and Jack manages to get killed at least another three times before he gets the chance to start doing things.
The story rollicks along, but ultimately it never seems solved because Gray is dealt with so quickly and then frozen away, wondering - so that's all they're going to do about it? Of course the big issue at the end - the deaths of Tosh and Owen - means that almost by necessity the ending to the actual story has to be virtually brushed over. Truth to tell, as soon as Tosh is shot we aren't really interested in Gray and so he may as well be dealt with in the way he was. The deaths of the Torchwood members are far more important to us, and far more meaningful.
Ultimately it's a little hard to actually review this story because the logical part of my mind is pointing out that it is basically - Gray comes along, pissed with Jack, and wreaks havoc on Cardiff, apparently in revenge. Except that as far as he is concerned he buried Jack in the ground two thousand years earlier, so...Jack will know what exactly? He's too busy dying.
The emotional side of me is still crying about the deaths of Owen, and particularly Tosh (I'm a sympathetic crier and so whenever John Barrowman starts blubbing, I'm usually there with him). So while the logical side is saying "C+" the emotional side of me is saying "A+". I'll comprimise.
However, unlike the end of last series, I'm now looking forward to the next series.
"B+"