They could have done it really simply and low-budget as well. Have the car in 'six months later' have all kinds of permit tags; insert a line about curfews. Have Gwen be obviously armed. In the grand panorama of the city, have there be areas of blackout and occasional flashing lights. All subtle signs that the nation is at unrest (I lived under military curfew for 2 years, it's quite eerie).

I would have preferred to have the grand reveal at the end be the putting-together of puzzle pieces from parts 1-4: I don't *get* the technobabble, and it cheapens the sacrifice. We live in a world where researchers have discovered how to extract vanilla flavouring from cow dung, where there are contact lens cameras, and *Jack Harkness* can't make a broadcast using alien-advanced audio technology that doesn't involve the wetware of a human voicebox? The show lost me there. Too much emotion used as whitewash for a plot that doesn't really stand on the legs it was given. *grumps*