John watched Ianto work the machine, halfway attempting to figure out what he was doing, but mostly just watching out of sheer interest. People who just knew what they were doing always interested John; it was just plain neat to see someone doing something complicated as though it were the easiest thing in the world.

He knew a bid for casual conversation when he saw one, and gladly went along with it, smiling wryly at the question. "Well," he said, clearing his throat slightly, "I'm a doctor, yes. I served overseas for a while, before coming back to London. And, my flatmate happens to be the world's only consulting detective, and he likes having me around when mysteries come up." He shrugged, "Seems like word got out. Plenty of people on the community seemed to know me before I even introduced myself, and, apparently, I'm the first one to come to when you're missing a shoe."