"Severus, if you believe me, then you're not Severus. On the other hand, we both know that neither of us needs a wand to hurt the other," he said, calmly. "On the other hand, do you know what's fantastic about being in the future? That I find out that you were a spy and saved Potter, the son, not the father, that Lupin was really a werewolf and that might brought remained reckless."
He moved past Severus toward the doors. "Come on in. The newspapers and the Red Baron might be more convincing. Of course, you could try and look into my mind. I might even let you." He turned his head and smiled. "Narcissa is here with her boy, Draco. She wasn't even pregnant when I died."
He walked inside, knowing that Severus would follow. "Right now, we have James and Harry Potter, my brother, Lupin, they are all young, meanwhile Dora is older. Narcissa and Draco. Ron Weasley. Some young woman that arrived today. She's from 2028. It's almost like being in school except that the school has liked the Black family."