I am definitely intrigued and creeped out by this Dinclusin guy, I really hope Arthur deals with the man properly! I think Michelle has the potential for being an interesting character in the story, someone so observant would certainly seem to help Arthur by unintentionally giving him some intel on Dinclusin and the high society folk he surrounds himself with.

As for a scent? I would really like Arthur to catch a scent of Eames's aftershave not on Eames but perhaps on someone else, or some location on the train.

Love the story so far!
Best Wishes!