I was wary -- drugs and I have this very delicate relationship where they are pretty much a mood killer for me (no matter what the desired mood is) but then I thought "It is Sheffie; everything she writes is brilliant"
Everything you write is brilliant.
The whole fic feels...slow and warm and building, a little tense and on edge. When they come out into the fresh air of the street again, or sit by the window, the coolness is palpable and refreshing.