In this strange complex of time and space anything can happen

I think the problem for me is that portraying black characters as Noble and Self-Sacrificing carries inevitable echoes of Boys' Own-ish stories featuring native trackers who lead white explorers to safety. Things like Walkabout (http://en.wikipedia.org/wiki/Walkabout_%28novel%29), where the Aboriginal boy saves the two white children from dying in the desert, but then dies himself. Too much of it makes it look an awful lot like this is being conceived of as the only really important function of characters of colour, who don't seem to get much personal characterisation of their own. I could be wrong, but I don't remember Isabella's father getting much chance to respond to or show grief about her death - which would have made him much more real as a character, and added plausibility to his decision to blow himself up if that still had to happen.

Anyway - I think the Doctor referred to the ID card he was holding as a 'library card' in the dialogue. Which is so sweet, and typical of both Eleven and One. And most Hammer horror films are easily and cheaply available on DVD these days. You could do a lot worse than the Wikipedia article (http://en.wikipedia.org/wiki/Hammer_Film_Productions) for pointing the way towards some of the best ones.