As the message drained away Vimes stared at the opposite wall, in which the door...

As the message drained away Vimes stared at the opposite wall, in which the door now opened, after a cursory knock, to reveal the steward bearing that which is guaranteed to frighten away all nightmares, to wit, a cup of hot tea.*
* The sound of the gentle rattle of china cup on china saucer drives away all demons, a little-known fact.