The Master shrugged, and pulled the Doctor out of the lift and into the corridor. "I haven't even done it yet. I don't know. I've had Lucy tell me about it, and my Doctor, to some extent, but I don't really know how I get to that point where it seems like the only option. Certainly not from the point I came here from - things were going pretty damn well!"
He fumbled in his pocket for his key and bent to unlock his door, glancing up at the Doctor. "And I do have a back-up plan. I told you - I told him but he won't believe me. I'll be back."