Father-in-law velvet tongue

I had only been married for 1 year when something happened that changed my life. I live with my husband in a 6-storey building (luckily there is an elevator) and my in-laws live in this same building. I came home late from work, it was almost 11.00 pm. In the building there was a dead silence, I think everyone was in bed by now. At one point I find my father-in-law in front of the elevator door.
— Hi Katia — greets me — Hi Walter, why…