"Lily, it's him, run!" he shouted, because he was facing the door and she was not, though really it was just confirmation; who else could it be? As she, too, leapt from her chair and swept Harry off the ground, walls were coming out of the floor and objects were flying across the room. James was making barriers - nothing fancy, not those dramatic sweeping iron things he used to use against Death Eaters, just big blocks of material, because there wasn't time - and they were shattering as fast as he could make them. (How long before he runs out of things to Transfigure, and a Killing Curse goes right through those Shield Charms? Don't think about it.) "Take Harry and go!" he was saying - and she'd been expecting it but still she thought damn you, come with me - "I'll hold him off!"