"That’s my theory. However there’s only one way to find out if I’m right, and it’s not exactly a low risk mission. You’d need to send everyone based in the Room back through the tunnel to Aberforth Dumbledore’s pub, leaving a small team in the room to go out into Hogwarts and summon the Room in the form of the place where things are hidden. And then you’d have to search the Room for the diadem...and then flee with it back into the Room once it has re-transformed, and then figure out a way to destroy the diadem..." Draco trailed off. It was hardly a foolproof plan, and his theory might not even be correct, in which case it would be a large risk for nothing. But if he was right... Hermione seemed to be following his line of thought.