Cass smirked at the answer, even as he handed over the files to Percy. 'For once a valid reason,' he said with a wink.
'I got a list from Professor Snape of black-market dealers who could, and probably would have, sold the anti-ageing potion to Rosmerta,' he said, pointing to Professor Snape's letter. 'I know it ended up irrelevant to solving the case, but I'm thinking we should go after them anyway.'
'I don't give a damn about where rich people get their cognac or caviare - but potions like this...it puts things in another light doesn't it?'