Magnis Osberic laughed shortly. “Master Tregarth, the Peace of the Highways may hold for our blood within Estcarp, and to a measure within Alizon and Karsten — providing we clink gold in the hearing of the right ears. But elsewhere in the world we show swords along with our trade goods, and this is the heart of our kingdom. Down in those warehouses lies our life blood — for the goods that we barter is the flow of our life. To loot Sulcarkeep is the dream of every lordling and every pirate in this world!

“The Kolder may be the demon spawn rumor names them, but they do not disdain the good things of this earth. They would like to paddle their paws in our takings as well as the next. That is why we also have a last defense here — if Sulcarkeep falls her conquerors will not profit!” He brought his big fist down upon the parapet before them in a giant’s crushing blow. “Sulcarkeep was built in my great-grandfather’s day to provide all our race with a safe port in time of storm — storm of war as well as storm of wind and wave. And it would seem that we now need it.”

“Three ships in the harbor,” Koris had been counting. “A cargo bottom and two armed runners.”

“The cargo is for Karsten in the dawning. Since it carries the Duke’s bargainings it can go under his flag and her crew need not stand to arms in the port faring,” remarked Osberic.

“ ’Tis tongued about that the Duke is to wed. But there is a necklet of Samian fashioning lying in a chest down there intended for the white neck of Aldis. It would appear that Yvian may put the bracelet on some other’s wrist, but he intends not to wear it on his own.”

The witch shrugged and Koris appeared far more interested in the ships than in any gossip concerning the neighboring court. “And the runners?” he prompted.

“Those remain for a space.” The Master Trader was evasive. “They shall patrol. I am better pleased to know what approaches from the sea.”

A bomber might reduce the outer shell of Sulcarkeep to rubble in a run or two; heavy artillery could breach its massive walls within hours, Simon decided, as he continued on the inspection round with Koris. But there were a warren of passages and chambers in the rock beneath the foundations of the buildings, some giving on the sea — those having barred doors; unless the Kolder had weapons beyond any arms he had seen in this world, the traders would appear to be unnecessarily nervous. One could think that, until one remembered the empty-eyed foemen from Gorm.

He also noted that while there were guardrooms in plenty and well-filled racks of weapons, stands of the heavy mace-axes, there were few men, widely spread through those rooms, patrols stretched over area of wall. Sulcarkeep was prepared to equip and house thousands of men and a scant hundred or so stood to arms there.

The three of them, Koris, the witch, and Simon drew together on a sea tower where the evening wind strove against their mail.

“I dare not strip Estcarp,” Koris spoke angrily, as if in reply to some argument neither of his companions heard, “to center all our manpower here. Such foolishness would be open invitation to Alizon or the Duchy to invade north and south. Osberic has an outer shell which I do not believe even the jaws of the Kolder can crack, but the meat within it is missing. He waited too long; with all his men in port he might hold, yes. With only this handful, I doubt it.”

“You doubt, Koris, but you will fight,” the woman said. There was neither encouragement nor discouragement in her tone. “Because that is what must be done. And it may well be that this hold will break the Kolder’s jaws. But Kolder does come — that Magnis has foreseen truly.”

The Captain looked at her eagerly. “You have a foretelling for us, lady?”

She shook her head.”Expect nothing from me that I cannot give, Captain. When we rode into that ambush I could see nothing but a blank ahead. By that very negative sign I recognized the Kolder. But better than that I cannot do. And you, Simon?”

He started. “I? But I have no pretense to your Power—” he began and then added more honestly, “I can say nothing — except as a soldier I think this is an able fort, and now I feel as one trapped within it.” He had added that last almost without thinking, but he knew it for the truth.

“But that we shall not say to Osberic,” Koris decided. Together they continued to watch the harbor as the sun set, and more and more the city beneath lost the form of a refuge and took on the outline of a cage.

It began a little after midnight — that creeping line across the sea, blotting out both stars and waves, sending before it a chill which was bom of neither wind nor rain, but which bit insidiously into a man’s bones, slimed his mail with oily beads, tasted salty and yet faintly corrupt upon his lips.

The line of light globes which followed each curve of the claw fortifications was caught. One by one those pools of light were muffled into vague smears of yellow. To watch that creeping was to watch a world being blotted out inch by inch, foot by foot.

Simon strode back and forth across the small sentry platform on the central watch tower. Half the claw fortifications were swallowed, lost. One of the slim raiders in the harbor was sliced in two by that curtain. It resembled no natural fog he had ever seen, unlike the famous blackouts of London, the poisoned industrial smogs of his own world. The way it crept in from the west as a steady curtain suggested only one thing — a screen behind which an attack might be gathering.

Deadened and hollow he caught the clamor of the wall alarms, those brazen gongs stationed every so many feet along the claws. Attack! He reached the door. of the tower and met the witch.

“They’re attacking!”

“Not yet. Those are storm calls, to guide any ship which might be seeking port.”

“A Kolder ship!”

“Perhaps so. But you cannot overturn the customs of centuries in an hour. In fog Sulcarkeep’s gongs serve seamen, only Osberic’s orders can mute them.”

“Then such fogs as this one are known?”

“Fogs are known. Such as this — that is another matter.”

She brushed past him to come out into the open, facing seaward as he had done moments earlier, studying the fast disappearing harbor.

“We of the Power have a certain measure of control over the natural elements, though like all else that is subject to failure or success beyond our forereckoning. It is in the providence of any of my sisterhood to produce a mist which will not only confuse the eyes of the unwary, but also their minds — for a space. But this is different.”

“It is natural?” Simon persisted, sure somehow that it was not. Though why he was so certain of that he could not explain.

“When a potter creates a vase he lays clay upon the wheel and molds it with the skill of his hands to match the plan which is in his brain. Clay is a product of the earth, but that which changes its shape is the product of intelligence and training. It is in my mind that someone — or something — has gathered up that which is a part of the sea, of the air, and has molded it into another shape to serve a purpose.”

“And what do you in return, lady?” Koris had come out behind them. He strode straight to the parapet and slapped his hands down upon the water-pearled stone. “We are like to be blind men in this!”

She did not look away from the fog, watching it with the intentness of a laboratory assistant engaged in a crucial experiment.

“Blindness they may seek, but blindness can enfold two ways. If they will play at illusion — then let them be countered with their own trick!”

“Fight fog with fog?” the Captain commanded.

“You do not fight one trick with the same. They are calling upon air and water. Therefore we must use water and air in return, but in another fashion.” She tapped her thumbnail against her teeth. “Yes, that might be a confusing move,” she murmured as she swung around. “We must get down to the harbor level. Ask of Magnis a supply of wood, dry chips will be excellent. But, if he has them not, get knives that we may cut them. Also some cloth. And bring it to the center quay.”