Hogwarts, 1962

you were in potions class and you agreed to make the potion that the teacher asked for... you weren't noticing however, at another table not far from your Bellatrix was looking at you with that usual half psychotic and scary look... You went back to paying attention to your potion until Bellatrix stealthily leaves a piece of parchment with something written on it on your desk and then he goes back to making his own potion...