Thief of Time (Discworld, #26; Death, #5)

by Terry Pratchett

Susan scared the life out of him. If was as if some secret place inside her boiled with wrath, and with the Auditors she let it out.

He remembered her hitting that one with her wrench. There had been just a faint frown of concentration, as if she was making certain the job was done properly. “Shall we go?”