The road watch caught the traveler at the southern checkpoint on a cold morning in early winter, and it was the particular flush along his neck, more than anything he said himself, that made the watchman send for Aldith before allowing him another step closer to the valley proper.
He gave his name as Osgood, a journeyman weaver traveling north from a village two days past Whitcombe, and by the time Aldith reached the checkpoint he was shivering badly despite the layers of travel wool wrapped around him, his eyes glassy with a fever that had clearly been building for longer than a single morning's ride.
"Rose marks," she said quietly, examining his chest with the careful, practiced efficiency Thomas had watched her bring to a hundred lesser injuries, though he could see, in the particular set of her shoulders, how much this examination cost her differently than the others. "Not many yet. Early, if it's what I fear it is."
"I only wanted to reach my sister's house," Osgood said, his voice thick and frightened. "She's expecting a child within the month. I didn't know I was carrying anything worse than a winter chill."
"You may not be. I won't know for certain for several days yet." Aldith's voice carried none of the fear Thomas could see plainly in her face, only the same steady professional calm she extended to every patient regardless of how badly her own private dread might be running beneath it. "But I can't let you continue toward your sister until I do know, and I can't ask you to turn back alone into weather this cold, either. You'll come to the fever house. It's plain, and it's apart from the rest of the town, but you'll be warm, and fed, and watched carefully by people who understand this particular fever considerably better than most physicians in this March currently do."
Osgood didn't resist, too exhausted and frightened to manage anything beyond weary compliance, and Thomas watched Aldith settle him into the plain, sturdy building Wat's crew had raised only weeks before, thinking of the sister waiting somewhere south, expecting a brother's help with a child soon to be born, who would instead receive only a careful, honest letter explaining the delay.
The valley held its breath for the better part of a week, the fever house's isolation maintained rigidly despite Diccon's visible restlessness at being kept from visiting even at a careful distance, and it was Aldith herself, emerging on the sixth morning with an expression Thomas couldn't immediately read, who finally brought the whole town its answer.
"It wasn't the fever," she said, and the relief in her voice was audible even through her professional restraint. "A lung infection, severe enough to frighten anyone, and the rose marks were nothing more than a rash from the wool he'd been wearing unwashed too many days on the road. He'll recover fully within another week, and I've sent word ahead to his sister that he'll arrive later than planned, but arrive regardless."
The valley's relief was as quiet and undemonstrative as its fear had been, the ordinary business of the season resuming almost immediately, though Thomas noticed, in the days that followed, a new carefulness in how households reported even minor illness, a new willingness to trust Aldith's watch rather than resent its inconvenience.
"It was a false alarm," Victoria said that evening, watching him turn the week's tension over in his own thoughts. "You don't seem as relieved as I expected."
"I am relieved. I'm also aware that we just tested every piece of this preparation against something that turned out to be nothing, and it still frightened the whole valley half to death." Thomas looked at her, and found the honest fear underneath his relief easier to voice than it might once have been. "If a lung infection and a dirty wool shirt can do that to us, Victoria, I don't know how we survive the real thing when it actually arrives."
"We survive it the same way we survived the fire, and the siege, and everything else this valley's endured," Victoria said, taking his hand. "Not because the fear ever stops being frightening, Thomas. Because we've learned, again and again, that preparation and honesty carry us further than dread alone ever could." She looked toward the fever house, its plain roof visible against the darkening winter sky. "Osgood's alive, and warned, and heading to his sister's side regardless of the delay. That's not nothing. That's exactly what all this preparation was built to accomplish, whether the danger it caught turns out to be real or false."
Thomas held onto that, watching the last light fade over a valley that had, once again, proven itself considerably steadier than his own private fears ever gave it credit for being.