Um, wow... Just, wow. Writing was utterly brilliant, I think (except for Ianto, that was just Deus Angst Machina), but still... Jack, you utter bastard. Killing your own grandson, running away again... I know there's the Greater Good justification, but still...
I will write up a more coherent review when I'm not this shocked anymore, but for me, Torchwood ends here. With only Gwen, there's no Torchwood anymore.
That are just a few short thoughts of mine after watching.