"And what about your father's parents?" the Doctor asked.

"My gran's quite famous," Heather admitted. "Samantha Briggs. The Minister for Trade and Industry."

"Oh, yes?" The Doctor looked at her closely. "And your grandfather?"

"He was called Jamie. I don't know any more about him. From the way she talked, it sounded like it was a one night stand. At Gatwick, I think."

"Jamie. Well, well, well."

"Is something the matter?"

The Doctor put his feet up on the console. "Funny thing, isn't it? You look and look and can't find what you're looking for. But the moment you stop..."