"Sebastian LeMat. I've been living muggle for the past couple of years and, well, any wizard with any brains has better things to do than hunt for me." And those without any at all, what few survived, wouldn't think he'd be willing to leave behind the heart of wizarding Britain and go into the magical wasteland of Newcastle.

"The Malfoys I'm acquainted with, we met in another city, a bit like this one." While he doesn't go into the details of how he first approached Lucius and forged a relationship based on enlightened self-interest, there's clearly something curious at the heart of the story. "They know who I am and have been good to me."

If all goes well, then when they return to their own timeline, Lucius and Narcissa have a decent shot at ending or shortening the second war. Sebastian was able to sway them not by any righteous talk, but because he could tell them what would happen to their son if they didn't. He isn't bothered by using Draco's well-being as a goad; it's war, after all.