[The Doctor is in his TARDIS console room, and looking worse for the wear. Hat's off and sweating and his eyes are ringed darkly. He has a collection of experiments lined up in front of him.]

I've lost track of my inmate. The Joker... the flood, I couldn't keep up with him. [He coughs, and catches his breath.] I need someone to find him. My watch. You'll need my watch to find him. Don't stare into it too hard. It's not a normal... it's not a normal watch.

[He wipes his brow and has to stop again, just to collect his words.]

The scanning devices in the TARDIS can't tell me why I'm running a temperature. One hot even for a human. I'm.... I don't know... I can't think...

[And he collapses, knocking off a couple of the devices as he drops.]