Seeker has returned to the fort looking flushed and exhilarated. “I was right,” he announces. “There is one of them hiding quite close by. I was certain of it, and now I know where he is. I can definitely feel directionality this time.”

Stablemaster, skeptical as always, lifts one eyebrow. “You were wrong the last time. You’re always too eager these days to find them out there.”

Seeker merely shrugs. “There can be no doubt,” he says.

For three weeks now, Seeker has been searching for an enemy spy—or straggler, or renegade, or whatever he may be—that he believes is camped in the vicinity of the fort. He has gone up to this hilltop and that one, to this watchtower and that, making his solitary vigil, casting forth his mind’s net in that mysterious way of his that none of us can begin to fathom. And each time he has come back convinced that he feels enemy emanations, but he has never achieved a strong enough sense of directionality to warrant our sending out a search party. This time he has the look of conviction about him. Seeker is a small, flimsy sort of man, as his kind often tends to be, and much of the time in recent months he has worn the slump-shouldered look of dejection and disappointment. His trade is in finding enemies for us to kill. Enemies have been few and far between of late. But now he is plainly elated. There is an aura of triumph about him, of vindication.

Captain comes into the room. Instantly he sizes up the situation. “What have we here?” he says brusquely. “Have you sniffed out something at last, Seeker?”

“Come. I’ll show you.”

He leads us all out onto the flat roof adjacent to our barracks. To the right and left, the huge turreted masses of the eastern and western redoubts, now unoccupied, rise above us like vast pillars, and before us lies the great central courtyard, with the massive wall of tawny brick that guards us on the north beyond it. The fort is immense, an enormous sprawling edifice designed to hold ten thousand men. I remember very clearly the gigantic effort we expended in the building of it, twenty years before. Today just eleven occupants remain, and we rattle about it like tiny pebbles in a colossal jug.