The Doctor leapt in after him, only just catching the side of the door with his hands as the ground gave out under his feet. "I wasn't aware we'd moved on from mind games to platform gaming. I'm out of practice."

He shut the door and grinned over at Jack. "I can't knit," he said. "Or sit through the whole of Titanic. Something about that soundtrack that bothers me..."

The flip attitude was entirely false, of course. He knew the moment the mind games started, things would be entirely too serious for their own good.

"Look forward to them and look out for them," the Doctor said. "Let's go."