"It has a sedative potion mixed into it, Granger. It's why they're so...out of it most of the time. It dulls the mind, and the body, so that sensation just...goes away, and you stop caring anymore. I can't save these prisoners, and I'm probably already damned for what I do as a Death Eater, but just in case I'm not, I'd rather not kill anyone I don't have to." Malfoy looks so terribly tired and sad and filled with guilt that Hermione's heart pangs for him of its own accord. "But the potion means that they don't care what happens to them. I can't get it to them always, and I can't get it to all the prisoners, but I do what little I can without too great a risk of exposure." Hermione stares at him for a long moment, trying to see inside his head, and it's he who drops his eyes first. "I'm not a good person – I know that – but I try to do what I can."