Hermione scowled about all this as she pulled back the sleeve of her robe and knocked three times on the rear door of the Academy, in two quick knocks and one after a delay ... the signal agreed on by Harry and Eloise Wood. Thirty seconds later and the witch married to Oliver Wood opened the door and beckoned Hermione inside, while Frank and Alice Longbottom stood guard in the dark, thrilled at being back on joint field duty. It felt just like they were being active Aurors again, and they basked in the rush of danger that the mission brought.