"Ah - thank you," he says as he ducks inside - quite literally ducks; the flap is a bit low for his lanky frame - sounding a little startled by her consideration. (The source of his surprise is purely cultural; having a woman hold the door for the man is very odd for him, and it genuinely takes him aback.) He straightens his coat once he's inside, and then asks the rather burning question -

"But...Forgive me, dear Miss Greene. But do you mean to imply that you were in prison?"