Percy snorted. "I learnt to keep the twins away. I reckon that my spells are a lot more powerful than anything any Slytherin can come up with. You really shouldn't underestimate the twins and their ability to get through anything."
He hummed, thinking, and shook his head. "No, I don't think I put it quite that way." He knew that what they were doing wasn't professional, but if they kept it out of the office, they might not ruin their career completely.
"I don't know, Cass. I'm assuming that it's not someone from here, which means someone who's hidden wherever they are, but we'll do what we can. Maybe it's time we call a few people who are known to have connections. Since we aren't charging them with anything-" He shrugged. "They might not enjoy being around us common mortals and that might make them more willing to talk so they can leave."