“Sirius is so engrossed in this debate , so involved in the conversation, that when the train leaves the platform , he does not see the boy waving to him frantically from the window.
He does not see the crestfallen look when he doesn’t wave back.
He doesn’t see Regulus Black running after the train in a vain attempt to catch the train.
Not when he’s found himself a new brother”
- snippet of chapter eight , dead or alive.