The Master ticked things off on his fingers. "First of all, your Doctor's here too? Ouch. Second, totally with you on the Doctor's TARDIS. You would not believe how much work that thing took to make it into a Paradox Machine! Third, apparently there is a way out, but it's very random and I haven't found it yet. Fourth, do stay and have fun tormenting people. There aren't really any residents, as far as I can make out - just people who've been drawn here like we were. And far, far too many of them are connected to the Doctor."