The adder lay coiled beneath the stone wall like a length of pale rope that had lost its purpose. Thomas Hargrave found it on a Tuesday in late October, the kind of day when the Yorkshire moors wore their grey shawls low over their eyes. He was gathering heather roots for the apothecary when his boot caught on the stone and something moved—a thin white shape, its belly scored with a deep gash, dark blood already crusted along the scales.

Thomas knelt. He was seventy-three years old, with hands like knotted rope and a heart that had outlived two wives and a daughter. He did not believe in omens. He believed in the work of his hands and the God who had given them to him.

"Steady now, little thing," he murmured, and unbuttoned the flap of his coat. He had a cloth bandage in his pocket—clean linen, cut for his own wounds—and a small tin of salve his daughter Elizabeth had prepared before the fever took her. He applied both with the careful patience of a man who had spent a lifetime mending fences and binding broken things.

The adder did not strike. It watched him with those dark, unblinking eyes and seemed to understand, or at least to accept, the ministrations of this old man whose hands were rough but whose touch was gentle.

He could not leave it there. The frost would come in three days, he could feel it in his bones, and a wounded adder in the frost was a dead adder. So he carried it home in his coat pocket, warm against his side, feeling the faint stirrings of a creature that had every reason to fear him and chose, for the moment, not to exercise that fear.

He made a bed for it in the old flour bin in the corner of his cottage—a shallow box lined with dry moss and leaves, placed in the warmest spot near the hearth. Each morning he went out to the moor and gathered the herbs he thought might help: yarrow for the wound, mint for the fever that sometimes ran through its small body, and honey from a comb he kept for winter teas. He crushed the herbs between two stones, mixed them with honey, and applied the paste to the gash with the tip of his finger.

Weeks passed. The frost came and went. The fire burned low in the hearth and Thomas fed it with the last of his firewood, sitting wrapped in blankets, watching the adder grow stronger. It began to crawl the full length of the box. Then to climb the sides. Then to explore the corners of the room, slithering across the floorboards with a confidence that made Thomas smile.

By the time the snow melted and the first green shoots appeared on the moor, the gash had closed to a thin white scar. The adder was full-bodied and sleek, its pale colour luminous in the dim light of the cottage.

Thomas opened the door one morning and held out his hand. The adder came to him slowly, coiling around his wrist like a bracelet of living silk. He felt its weight, its warmth, the faint pulse against his skin.

"Go on then," he whispered. "Find your family."

He carried it back to the stone wall where he had found it and set it on the ground. The adder paused, raised its head, and regarded him for a long moment. Then it slid beneath the wall and was gone.

Thomas felt a hollow space open in his chest, though he could not have said why. He went inside, locked the door, and sat by the fire.

The winter that followed was the harshest in living memory. The rain came in November and did not stop. The fields flooded. The crops rotted on the stalk. Thomas's granary, which had always been lean, grew emptier with each passing week. He sold his silver spoon. Then his good coat. Then the iron pot he had cooked every meal in for forty years.

His neighbours came to ask for help. Old Thomas had always been generous—he had shared his harvest with the Widows and the fatherless when the blight took the rest of the village. But now there was nothing to share. He told them so, and they looked at him with eyes that said what he already knew: there was nothing left.

The adder never returned.

Thomas ate gruel made from the last of his barley, thin as water. He sat by the fire and watched the granary door, as if he expected it to open and reveal a miracle. It did not. The granary stayed empty, its wooden doors hanging slack on their hinges, the floor bare and dusty.

He died in March, when the thaw finally came. They found him in his chair, wrapped in his blankets, his face turned toward the granary. The adder was gone. The granary was empty. And Thomas Hargrave, who had given everything he had to a creature that asked for nothing in return, had nothing left to give at all.

The village buried him on the hill above his cottage. They said he was a good man. They said he was generous to a fault. No one mentioned the empty granary, because to mention it would have been to acknowledge the one truth that made them all uncomfortable: that kindness, in this world, is not always repaid. Sometimes it is simply spent, like coal in a stove, until there is nothing left to burn.