"I know!" Harry snapped, louder than he’d meant to; he immediately lowered his voice, "I know, but will you just listen to me," Draco scowled at him but fell silent anyway, "Thank you - please just hear me out, okay?" Draco said nothing, "Listen - out of everyone in this castle, he’s possibly the person in the best position to help us. Last time round, he was the person who saved Dumbledore from immediate death following interacting with the ring. It serves to reason he could help us dispel any curses on it. He could help cover for us while we’re out of the castle. He has a long history of being an excellent spy - he’s lied to Voldemort for years, and he can certainly lie to Dumbledore. He could even find out if Voldemort has retrieved the ring already. He could help us so much Draco - and I trust him more than Dumbledore,"