Definitely a black market dealer of sorts, then. If he owned a bookshop he likely had to pass whatever illegal items inside the books, which meant they had to be smalll. A money laundering operation perhaps? Or a gambling ring? Jo was relieved to have never met him before, as such dealings only brought trouble. Mr. Gibson's shop was proof enough of that. "What's the name of your shop, then?" She asked, mainly as an effort to know which shop to avoid when home.

His slip made it seem as though he was about to say cursebreaker, which made no sense whatsoever. Jo knew of all the magical bookshops in London where Mr. Binns was clearly from. And nomuggle that she'd ever met knew anything about the secrets. "I've not heard of many in London being interested in the Mayans outside school. They did have intricate writing systems, though." The slip of school could be easily explained away should he press her. Although, if he asked where she attended Jo wouldn't have the slightest clue how to answer.

Jo took another sip of her drink and frowned when all she tasted was ice. So much for that, then. "Not many, no. This will be my second. I've only been doing this for two years now."