"I don’t think you did anything, really. When we were researching Tom Riddle in second year the only information we could find was about your time at Hogwarts. Nothing you did after was recorded, so it couldn’t have been important," Harry said. He hadn’t meant it as a dig, but Riddle scowled anyway. "And no one knew Tom Riddle turned into Voldemort. Maybe you disappeared for a while before coming back as a Dark Lord? You must have done loads of rituals and stuff, since you looked so nasty, and surely that took time."