Some habits are hard to break, and Professor Vector had been visiting
the Hog's Head since before the war.  Tonight, however, a robed figure
sat at her customary table.

Still, she decided, a little company couldn't hurt,  "Good evening, I
don't believe we've met, Mr..." 

The stranger raised one finger to his mouth.  "Black, and I'd trouble
you not to make a fuss..." 

Vatiare nearly shrieked, but managed to restrain herself.

"...I've been hearing certain things about you, that might be better left
unsaid..."

"The headmaster..."

"I'm sure.  What about the parents?"

"What do you want?"

"Access to the castle."