Nightlily: The Lovers' Tale - by Barbara Hambly
This is about Trevagg, a tax collector.
I actually found the part of the story dealing with his job and co-worker more interesting than the Nightlily portion.
If I have any one criticism of it, I think the author crossed into the movie story too much. By that I mean the main character heard too much of the dialogue from the film. Some of the other stories were just as tied-in, but still remained observational. Without spoiling - the reason for this was addressed in the story and the character, but personally I've enjoyed the others more. I find the stories more interesting when the events of the film are just casual observations by bar patrons.