“Uh, can I help?” “Doomsday is locked in the undercroft,” Rufus said, with all the calm he could muster. “Have you a spare key to this door, at all?” “Oh—ah—no. No, I don’t think there is one.” “Then bugger off and let me break it down!” “Well, if you like,” Odo said. “Or you could take the other way in?”