“It’s still warm,” he said.

His gaze went to a large scroll hanging on the wall. He yanked aside the scroll. Behind it was a door, which he opened. Cold air and snowflakes blew in from a courtyard. Bare footprints in the snow led to a shed. The samurai rushed to the shed and flung the door open. The leader shone the lantern inside.

On the floor, amid firewood and coal, sat an old man. His knees were drawn up to his chin, his arms folded across his chest. He wore a cotton night robe and cap. He shivered, his teeth chattering, his breath puffs of vapor. His lined face was white; his eyes shone with terror.

“Who are you?” asked one of the samurai, the youngest, a sturdy boy.

The old man lashed out with a dagger he’d been hiding. The boy grabbed his wrist and wrenched the dagger from his grasp. He cried out in weak, pained protest. The leader pulled off the man’s cap and held the lantern near his head. A white scar gleamed on his bald crown.

“It’s him,” the leader said. “Bring him outside.”

The samurai threw the old man on his back in the snow. They pinned his arms and legs while he screamed. The leader stood over the captive. He removed the scarf that hid his face, then held up the lantern so that the old man could see him. Below his fierce eyes, his nose was long with flared nostrils, his mouth thick but firm. He wasn’t young, and his features wore the stamp of suffering.

“You know who we are. You know why we’re here.” He chanted the words as if he’d rehearsed them. “Now you’ll pay for the evil you’ve done.”

The old man tried to turn his head away, but the boy grabbed it and held it immobile. He moaned and rolled his eyes, seeking help that didn’t come. He struggled to escape, in vain. The leader drew his sword, grasped it in both hands, and raised it high over his head. The old man’s lips formed words of silent protest or prayer.