The Invasion

“I hate computers and refuse to be bullied by them!”

ISOBEL: You're still worried about your two friends, aren't you?

ZOE: Yes, a bit.

ISOBEL: They can't have got themselves into any sort of trouble, can they?

ZOE: Oh, you wouldn't say that if you knew them. If there's trouble to be found, the Doctor and Jamie can't miss it.