Hope it's okay to bump this thread, but I didn't want to start a new one for this question:
Was episode 1 of "The Mind Robber" still missing after the rest had been recovered? I just watched it on Netflix streaming, and I'm pretty certain I've never seen part 1 before. Watching the episodes in "movie" format on PBS, I remember the story beginning with the TARDIS exploding in the black void and Jamie and Zoe clinging to the console, which is the start of part 2. So was episode 1 missing in the '80s, or was there another reason it wasn't included in the "movie" edit distributed at the time?