The Jack/Andy banter is spot on here, and I'm loving how Andy and John speak to each other now. Great to see Sarah Jane again too, and to know that my science-speak can handle your John, Jack and Luke. Not bad for a pretentious ex-lit student!

Incidentally, Andy's speculations rock my socks. I think I even prefer this to Neith, and that's pretty hard to achieve. Your world just keeps getting sharper.