"If it’s nothing I did, and you don’t know me well enough to dislike me personally, that must mean you had formed an opinion about me before we even met. Or at least, before we met in this timeline." The energy in the hallway had shifted. Riddle’s expression didn’t change, but he began to look slightly manic, a glint Harry didn’t like entering his eye. "Tell me, Potter, what do you know of me from the future?"