Blimey, this episode really does feel topical watching it in 2020! You've got a killer virus on the loose, and no vaccine to stop it.

Ianto's death at the hands of said virus is still a really shocking and emotional moment, even if like me you have already watched this episode before and knows it's coming. It's such a powerful scene, and it comes at a very unpredictable moment, at the end of the penultimate part rather than the final episode.

I also love how corrupt the government are shown to be here. Here we've got agovernment trying to justify giving up the lives of millions of children by pointing to things like overpopulation and school league tables as excuses, as though that makes their deaths perfectly fine. In their words, kids who are underperformers are of no use to society because they will likely end up on benefits anyway. It's so dark, but totally true to how a government would deal with such an extreme situation in real life. I can buy that they would be this callous and full of their own self interests.