"Well, hopefully he hasn't started anything yet. But we can't find out that until we get there and... and we'll figure it out when we get there!"

Around the corner, down to the end of the block and there was the house they'd chosen. The Doctor hurried up to the door and raised his hand to knock--

And stopped.

"Wait, what if he answers?" he dithered. "He'll probably be pretending to be me or something. I know, why don't you knock, and I'll sort of keep out of sight. If Amy answers, that's good, but if he-- I mean, I do-- then... we'll have to think of something. Maybe I can sneak in around the back? No, wait. He'll probably be expecting me, so it might seem odd if you show up for no reason..."