Thread:Aaronbill3/@comment-28716546-20170416070909/@comment-24922135-20170513202008

Didn't say anything about last episode, so I will now: sloppy foreshadowing for a plot twist given away by the trailer. not a fantastic episode but decent.

Oxygen was probably the best episode so far this season imo. I would've complained if they just threw away the blindness, but keeping it makes the future of Capaldi's Doctor quite interesting. Since that was episode 5, I reckon the next episode will be an explosive mid-season two-parter. The trailer gave away that Missy was in it (they really need to stop giving this stuff away), but the focus on the vault in the trailer was interesting.

My theory is that the vault contains the maddened, cannibalistic pre-Missy Master. After all, that version of the Master was on Gallifrey at the end of the time war. In The End of Time, Rassilon was sent back into the Time War by the Master. We saw Rassilon get banished at the end of the universe by the Doctor in Hell Bent, but we never saw what became of the Master. Since we know from Knock Knock that whoever is in the vault likes Piano and is therefore, likely, and intellectual. He also seems to enjoy the concept of people getting eaten. Both of these qualities describe the Master in some way.

I feel like we'll see the Doctor regenerate sooner rather than later, it would be hard to keep up the act of the Doctor being blind and I don't really see why it's easier for him to stay blind than it is to regenerate (and explain the concept of regeneration to Bill). IIRC Time Lords can regenerate by choice and I don't think that regenerating by choice would carry the risk of regeneration sickness.