Zach noted her skeptical gaze, but he was unable to glean what it was exactly Jo thought of him and his pursuits. It didn't occur to him that she might think him to be some shady, black market dealer. That was Gibson's territory. Most heard him speak of books and then tuned out his excited rambling enough to not question his vague answers. "I own a shop. I sell books that you don't typically find in any regular London shop. I just prefer to personally acquire the more interesting ones." Which probably now sounded like he sold dirty books. Merlin. He quite enjoyed muggles, but sometimes it was difficult to have a conversation without feeling the need to be so vague and secretive.

"Ah, the Mayans!" It seemed he was at least a man of learning, which pointed to him being truthful about his interest in books. "I haven't studied them extensively, but they do crop up as a subject of interest among many of my cur--customers who find interest in their temples." He's almost said cursebreakers in his excitement. "Mayan mysticism is simply fascinating, and they have one of the most sophisticated ancient writing systems."

"I shall have to remember to schedule some time to explore them next I'm this side of the ocean. I do hope your dig goes well. Have you worked on unearthing many Mayan temples?"

It was then that his food appeared, and he dug in ravenously. It took a moment, but he fairly quickly remembered his manners and slowed his eating.