Adam frowned, looking him up and down. They'd only spoken once before, but he was pretty good with names and faces. Especially here on the train when the people on board usually only changed every few weeks. It was like having classes with the same people over and over; eventually, you got to recognize them.

"Did something happen?" He didn't notice the scarring immediately, but he did notice the rucksack, which people on board didn't usually take with them everywhere. "Did you just get here?"