He looked thoughtful. "I might need something else," he murmured. "Perhaps you could tell me what trouble you and Rodolphus have been causing," he suggested.
Oh, he knew some of it, but he'd like to hear her accounts of ways they'd been playing with Muggles and Muggleborns. "I trust you've been practicing with your new spell?" he continued, his voice lowering to almost a purr.