This is just a simple question I want to pose to you.
Why would a middle aged man knock on your door at 10 PM in the night, asking if this is 'here he can buy cigarettes?'
For you wannabe Sherlocks, I will add that he also said nervously, when faced with the stern face and the commanding height of the author, that he just heard, it was either here or number so and so.
My last clue: We live 2 streets away from a Tesco convenience store, which was still open at the time, as well as a multitude of kiosks and corner stores!
I will await the answer with great anticipation...