Inferno - Episode 3

Ah, now we're getting to the meat of this story. The Doctor arrives in the parallel universe. As the Doctor says, so many similarities, yet so many differences. The Brigadier without his moustache and with his eyepatch and scar. Liz in uniform, with kinky boots. Benton being mean. It's all very cool, and is even bleaker in atmosphere than the "normal" universe in this story. Very effective. I believe the big fall in this episode made it into the Guinness Book of World Records at the time.