Ah, here we are. The penultimate episode. Only one left to go!
The Cybermen are continuing their invasion of the world. It seems to be going well for them, and less so for the various armies. Also Vaughn is learning a valuable lesson or two about his allies.
Meantime, we get some fun sparing between him and the Doctor, and see Jamie running around being Jamie. We also get Zoe being basically a human computer, which is pretty enjoyable, and had to have sent a good message to young girls in the 1960s.
A good episode all around, and a nice set-up for tomorrow’s conclusion!