In my mind, Dusk is right next to night, which is kind of black. I thought of it right away, even though my only exposure to Black Books is through what you write about it. Dunno whether others would read it that way. You could do a survey about it, if you want... ;)

I do notice that the name of the bookshop isn't given in the first chapter, itself, just in your introduction. You could check your later chapters to see if it's ever actually named in the text, and then decide what to do.

I enjoyed reading the chapter, last night, and am eager to see more of the book!

Um, do you want editing suggestions? I saw some places where I think commas were missing (though I do tend to overuse commas, myself) and some places where shorter and simpler sentences would have read more easily. Details available if wanted...

Thanks for writing this and sharing it with us!
Dances