Remembering the business with Bad Wolf & Saxon in Torchwood last year, I began looking for similar things about halfway through "To The Last Man" and immediately noticed, at 26:51, symbols on the window behind Jack. Some of it is obviously calculus, but I'm referring to the circles-- is that Gallifreyan writing?
And,
Only on Torchwood would they show Jack & Ianto making out and skip Tosh & Tommy's hot het sex. Damn.
As for "Maleficus Maleficarum," I was not that impressed.
Annnd now it's time to study some orgo.