Thanks for the update. And I agree with the analyses, Ashley and Aless. I guess I assumed the whole story would be told in one series, but when I was searching around yesterday, I found a web-site in reference to the original series, and it looks like THAT ran in three series - I know I would've seen just a few episodes of the first series, when people were meeting up with each other and dealing with the shock.
If I find that web-site again, I'll post a link in case anyone's interested...