[Ah, there she is.

Sirius grins widely once he sees her.]

So you're Shannon Beiste, then. My best friend James told me about you.

[He sticks his hands in his pockets, still smiling, of course, but now it's like he's getting down to the business that's at hand.]

I'll come right out with it, then: James told me you've found a set of books that seem to be of special interest to both of us.