The tide was wrong for the hour.
Callum Breck had been told that before he took the night walk from the pier to the croft. He was thirty-nine, a man who checked the creels after dark because the day boat was already spoken for, and the beach was the short way home. The old woman at the store had said the sentence once, and not as weather. Do not cross the beach at night. She had not said why. On Orkney a warning that short is already the whole of the story.
He went anyway. The moon was up. The sand looked ordinary. Kelp lay in black ropes where the last wave had left it. His boots made the sound boots make, and for the first hundred paces that was the only sound, and he let himself believe the old woman had meant the tide, or a soft place in the sand, or the ordinary risk of a man walking alone.
Then the sea mist came in against the wind.
It should not have done that. Mist follows the air. This mist came off the water and moved up the beach as if it had business with the land, low and pale and smelling of iron and of something sweet that had gone over. Where it touched the kelp, the kelp darkened further, as if the plants were being told to die a second time. Callum stopped with the pier still in sight behind him and the croft not yet in sight ahead.
The nuckelavee does not come as a horse and a rider. That is the error the south makes. It is one thing. A horse with no hide, the muscle red-black and wet, the veins carrying blood so dark it looks burned, and out of the back of that horse a man’s trunk rising, skinless as the rest, long arms, a head with a mouth too wide for the skull. No skin anywhere. The breath is the weapon. Crops fail where it has passed. Men sicken. The old name for the sickness is mortasheen, and the old cause is this thing leaving the sea because someone has offended the water, or because the night is simply his.
Callum saw the shape before he let himself name it. Horse. Then not a horse. The legs were too many in the mist, or the arms were, and the head that should have been only a horse’s head had a second head above it, bald and raw, the mouth open, and from the mouth a thread of pale breath that did not rise. It crawled over the sand. The kelp it touched curled.
He had been told one mercy, years back, by a man who no longer fished. Fresh water. The nuckelavee will not cross a running burn. The sea is his road. Sweet water is the door he cannot use. There was a burn at the end of the beach, a thin cut of stream that came off the hill and crossed the sand before it was lost in the salt. Callum had stepped over it on the way down and thought nothing of it. He thought of it now.
He did not run at first. Running on wet sand is how a knee goes and how a story ends in the tide. He walked, fast, toward the burn, and he did not look at the second head. Looking is how the breath finds your mouth. The mist kept pace. It was not wind. It was the thing’s exhalation, and it smelled of a byre where something has died and not been found, and of the sweet rot under a lifted stone.
The horse-shape came out of the mist at a walk that was not a horse’s walk. The front legs were right. The back legs were right. Between them the man’s trunk leaned, one long arm swinging, the hand open, the fingers too long, no nails so much as the ends of bone under raw meat. There was no saddle. There was no seam. The man grew out of the horse the way a branch grows out of a tree, and the blood in both of them was the same black thread.
Callum reached the burn with the breath already on his collar. The water was a hand’s width. It looked like nothing. He put both boots in it and stayed there, because the old mercy is not that the stream saves you if you cross it. The mercy is that the thing cannot cross it. He stood in the cold fresh water and turned.
The nuckelavee stopped at the salt edge of the burn. The horse’s head lowered. The man’s head did not. The mouth worked. The pale breath spilled onto the sand and stopped where the fresh water started, piling like a thing that has met glass. For a moment Callum saw the eyes. They were not angry. They were patient, the way deep water is patient. The arm reached. The fingers stopped above the burn and did not descend. The skinless chest heaved. A drop of black blood fell from the horse’s jaw and hissed when it met the stream, a small sound, like fat on a pan.
He did not speak. Speaking is a kind of breath, and he would not trade breath with that mouth.
They stood so for as long as a man can stand in ice water before his feet leave him. Then the nuckelavee turned, not quickly, and went back down the beach the way the mist had come, and the mist went with it, and the kelp it had passed lay flat and dead in a darker line than the rest. Callum stayed in the burn until the shape was in the surf. Then he crossed to the croft side, and he did not cross back.
In the morning the beach was ordinary. The line of dead kelp was not. It ran from the tide to the burn and stopped. His neighbor’s kale, in the yard above the sand, had blackened on the side that faced the water. No one asked Callum what he had seen. On Orkney the ones who know do not need the telling, and the ones who need the telling will not keep the rule.
He still checks the creels. He takes the road now, the long way, off the sand. When the mist comes in against the wind he does not go down to see it. He has not stood in that burn again. He does not trust his feet to choose it twice.
The rule is older than the pier.
If the mist walks up the beach against the wind, do not walk down to meet it.
If the shape has two heads and no skin, the burn is the only door.
If you are already on the sand when it leaves the sea, find fresh water and stand in it, and do not answer the breath.
The nuckelavee does not need to catch you.
He needs you on his side of the water, and the ones who cross the beach at night learn that the mercy is a stream no wider than a hand, and that his breath will wait at the edge of it, patient as the tide, until someone steps back into the salt.
