"I assume you'll want proof of my identity," Draco said, not moving any closer. "I'll answer any questions you like. But the long and short of it is that we're in the future. 2038 to be exact. The Wizards of Britain have been extinct for eight years, and Hogwarts has been pulling people from all over history to repopulate. I am your son, but from 2003. I can tell you're from earlier than that."
He took a step forward and gave his father a strained, awkward smile.
"So. Questions. And Proof. Whatever you need to ask."