What had happened was that the Master had heard a distant roar, of something far off but very large. And although the tyrannosaur (or could it have been a Taxxon?) was not yet close enough to be any real threat to the House, it had taken the initiative to panic anyhow. By the time the Doctor regained consciousness, the feedback loop had worked the two up into such a state that the Master had almost forgotten how glorious it had been briefly stopping the other Time Lord's hearts, or etching his name into the Doctor's back in High Gallifreyan. Instead he was pacing, awash in an anxiety that was only growing worse by the second.

Something was coming. He had to fortify. Protect. Hide. Fortify. The Master was so preoccupied that he didn't realize he was muttering to himself, voicing these thoughts. He didn't even notice the Doctor was watching him until the Drudges, in some sort of reactionary spasm, released his limp body all at once, the noise catching the Master's attention.

His words trailed off as he stared at the Doctor with wide eyes, almost looking through him.