"Well I've been on the wrong end of some exploratory surgery once," the Doctor remarked. "...not that I'm really sure there's a right end to be on there. But I'm sure Martha will be careful, won't you, Martha?"

He smiled at her, fully aware of how much he was asking his former companion to keep to herself now, but trusting her all the same. It was already bad enough with how much had apparently been broadcast - and how had that happened? He didn't think the Master had done it, not without making sure the Doctor knew what was happening first - so the last thing he wanted was to give Jenny even more of a reason to go after the other Time Lord.