"So, where are you bunking around here?" you ask. Mattsson’s hand comes up to fidget with the stained red bandana that’s tied loosely around his neck. He looks at you for a long moment, squinting against the sun that’s somewhere behind your head. Finally, he says, "I can show you, but I can’t tell you." He stands up, offers his hand to help you to your feet. "Want me to show you?"
Agree and follow Mattsson. Decline. Once Mattsson has left, go talk to the people by the wagon.