(This is when you all are in Hogwarts) you, Sirius, Bellatrix and Narcissa are all siblings. Narcissa is the oldest you and Sirius are the middles and Bellatrix is the youngest. You had just gotten out of the shower and walked into your dorm (you are the only one in Slytherin who has a dorm to themselves) to see them Sirius and Bellatrix: talking to each other Narcissa: silent