Inferno - Episode 4

This story stays strong, even as we reach the past-halfway point. The differences between "our" world and the parallel world are handled really well. The Doctor looks kinda goofy in his white anti-whatever suit. Nick Courtney is really angry as the Brigade-Leader, very loud too. I keep wondering why the parallel world has that little power-to-the-Doctor's-hut console attached to the computer or whatever it is, seeing as the Doctor doesn't exist in that parallel world.