PARABOLICAL GRAFFITI

Susan? Do you think you might like to come by for tea this afternoon? I'd like to catch up.

Does anyone care to inform me where I've ended up? I'm not quite sure myself, but I can certainly say that this was not where I expected to be.

I must say, this is a bit odd. Still, it seems to be the custom, and when in Rome...

Hello, I'm the Doctor, and I appear to have mis-navigated somewhere along the way and lost Peri. That's troubling. Would somebody be so kind as to tell me what year it is?