Seriously - avoid anywhere you may see TV guide spoilers for ep 13 as I suspect there is something coming you won't have been exposed to yet.

I was wondering this at the start of the season: each of the two completed seasons so far has seen someone being written out. And RTD has talked about how great it'd be to do a regeneration without people knowing in advance. I wonder if that's what he has in mind?

And if so, wouldn't Simm make a great Doctor?