Theron Nightshade needed iron, and the tyrant's soldiers had taken all of it. He crouched behind a snowbank at the edge of the market square, watching them load the last wagon. His blade needed raw ore. Only his hands could forge it, and only that blade could end the tyrant's reign. But the soldiers seized every scrap across Leeward before it reached a single forge. Theron had melted stolen buckles and broken hinges for weeks. Tonight even the scraps were gone. His fox pressed against his leg. She was no ordinary animal. Ice crystals studded her gray fur, and her coat held the dull shine of raw ore. He had raised her since she was a pup, pulled half-frozen from a river. She growled low at the soldiers, and he set a hand on her back to quiet her. "Not here," he whispered. "Too many." A soldier shouted. Two more turned toward the snowbank. Theron froze. His fox bolted the other way, straight across the open square. The soldiers cursed and chased her. Theron ran while their backs were turned. He did not follow the road. He followed his fox. She led him down the frozen river, her claws sure on the ice. Then she stopped and dug at the bank. Theron cleared the snow with his hands. Beneath a sheet of cracked ice sat a black gap in the stone. A cave, sealed under the frozen river, hidden from every road. He squeezed through the icy mouth. Inside, the walls glittered. Veins of ore ran through the dark stone, thick as his arm. The soldiers had stripped every mine and forge above ground. They had never found this. His fox trotted ahead, and the crystals in her fur matched the ore in the walls. She had known. She had led him here all along. Theron pressed his palm to a vein and felt the cold metal. Enough here to forge ten blades. But he needed heat to free it, and he could not haul stone past the soldiers to any forge in Leeward. Then he saw it at the back of the cave. A squat stone well, ringed with old iron. He looked over the rim. No water waited below. Coals glowed there instead, banked and patient, a hidden forge built into the shaft. Someone had made this place a smithy long ago and left it whole. Theron laughed once, quiet and sharp. He had ore the tyrant could not seize. He had fire the tyrant did not know existed. He fed a chunk of coal to the coals and watched them brighten. But heat and ore were only the start. His blade needed more than iron. It needed the rare thing that would bind the enchantment, the thing no forge alone could give. He did not have it yet. He knelt by the fire, his fox at his side, and began to plan how to get it.

Theron knelt by the coals until dawn, chasing the same thought. His blade needed one rare thing to hold the enchantment, but he only had rumors. Old men had spoken of frost-thread spun by spiders in the high crags. They had spoken of a dead wizard who wrote the binding down. Rumors would not forge a weapon. He needed the record, and he knew where the dead were kept. He fed the coals, whistled for his fox, and climbed toward the ice castle above the tyrant's roads. The castle rose from the mountain, its crystal towers sharp against the gray sky. Its walls shone like frozen glass. Soldiers held the gates, so Theron went around. His fox found the crack, a narrow seam in the ice where the wall met the cliff. He wedged himself through and dropped into cold darkness. He went down. The air grew colder with each stair. At the bottom lay the crypts. Stone caskets lined the walls, sealed in frost. Theron wiped ice from one lid after another, reading the worn runes. His fingers went numb. His fox stopped at the last casket and dug at its base. He cleared the frost and saw the carving. A wizard lay beneath the ice, hands crossed, a tall pointed cap on his head. This was the one. The old men had named him. Theron pried the stone lid until it slid free and crashed on the floor. The wizard lay perfect, untouched by rot, held whole by the cold. Theron reached for the cap. His hand shook, not from fear but from the freezing air. He lifted the cloth and found a rolled scroll tucked inside, dry and brittle. He unrolled it by the light of his lantern. The scroll named the binding. His eyes ran down the faded ink. Heat alone would not hold the enchantment. The molten iron had to be drawn out and wound with a thread that would not burn. The scroll named it plainly. Frost-thread. The shimmering silk spun by the ice spiders of the crags, the only fiber that carried a spell into cold steel. Theron read it twice to be sure. The rumor was true, and now he held the proof in his hands. He rolled the scroll and pushed it into his coat. A shout came from the stairs. Boots struck stone above him. The falling lid had carried its sound up through the castle. His fox growled and bolted for the crack in the wall. Theron ran after her. He knew the binding now. He knew what his blade needed. But the thread grew far above, in crags crawling with the spiders that spun it, and soldiers were already at his back. He squeezed through the seam into open air and did not stop running.

Theron reached the crags by midday. The mammoth-fur jacket held the cold back, but it could not solve his real problem. White webs stretched across the rock ahead. Somewhere inside hung the frost-thread he needed. He stopped at the edge of the nest and did not move. He knew nothing about the spiders. One wrong step could wake the whole swarm before he cut a single strand. His fox growled low. Her ore-flecked fur bristled along her spine. She would not go closer. Theron crouched behind a boulder and watched. The threads trembled when the wind touched them. He saw no spiders yet. He did not know if they hunted by sight, by sound, or by the pull of their webs. Guessing would get him killed. "You'll want to stay off the webs," a voice said behind him. Theron spun, blade half-drawn. A lizard man stood on the rocks, grinning. Green scales showed at his throat above a thick winter coat. A rope and ice pick hung from his belt. Speckled frills ran down his neck. He held up both clawed hands, easy and calm. "Name's Ridge Scalecrest. I climb these crags for fun." He looked at Theron's drawn blade and laughed. "You don't look like you're here for fun." "You know the spiders," Theron said. It was not a question. "I've watched them for years." Ridge crouched beside him, unbothered. "They feel the web, not the ground. Step on the silk and they come fast. Cut it slow, from the outside, and they barely stir." He pointed with one claw. "The old threads at the edge. Those are the ones you want. They've already left them." Theron studied the webs again. Now he saw the pattern. Fresh silk near the center, bright and tight. Loose, pale strands hung at the rim, abandoned. His chest loosened. He had a way in. "Why help me?" Ridge shrugged. "You looked about to kill yourself. Bad for the view." He unhooked the ice pick from his belt and pressed it into Theron's hand. "Hook the thread. Pull from the side. Don't yank." Theron crept to the edge of the nest. He slid the pick under a loose strand and drew it toward him, slow. The silk came free without a sound. It shimmered, blue and white, like frozen water spun into cloth. He wound it around the pick's handle, strand by strand, until a full bundle gathered there. The webs at the center never moved. He backed away and did not breathe until the rock hid him. The frost-thread glittered in his fist. He had it at last. Ridge clapped him on the shoulder. "Now get down before dark. Something always comes when the sun drops." Theron looked at the silk, then at the long climb below. He had the last piece for his blade. But the forge lay two days back, and he still owed a debt to the dwarf who waited between.

Theron reached the forge cave before the soldiers could close in. The ore lay smelted. The blade sat cooling on the stone rim of the forge-well, its edge bright. He unwrapped the frost-thread and spread the scroll beside it. Now came the last step. Bind the silk into the steel, and the blade would answer only his hand. One mistake would burn the thread to nothing. He had no second bundle. He read the scroll by firelight. Half the lines had faded to gray smears. He could make out the first binding: wet the thread, lay it along the hot blade, speak the rune. But the next instructions broke apart. One word might be "cold" or "fold." He could not tell. If he guessed wrong, the silk would curl and die. He sat back. Two days of climbing, a debt paid in blood, all of it rode on words he could not read. He knew one man who could. Deep in the ice, past the frost-lined walls of an old tomb, lived a wizard who handled rare things for a living. Theron had passed the tomb once on his way down. He left the blade and ran. The tomb door stood under hanging ice, its runes faint. Inside, a bent old man ground powder in a bowl. Vials hung at his belt. He did not look up. "You tracked snow onto my floor," the wizard said. "Speak fast. The soldiers on the ice will find you soon." "Icridge Eldrick." Theron held out the scroll. "I can't read it. The binding for frost-thread. One wrong move ruins my only silk." The wizard took the scroll. His eyes moved along the faded lines. He grunted. "Fold, not cold. You wet the thread, lay it flat, then fold it once at the hilt before the rune. Miss the fold and the heat eats it." He tapped a blurred mark. "This says work quick. The steel must still glow." Theron breathed. "How do I pay you?" "You don't." The old man pressed the scroll back into his hands. "I've no love for the one you mean to kill. Now go, before the forge cools." Theron ran back. The blade still held a faint glow. He wet the frost-thread and laid it along the steel. It hissed. He folded it once at the hilt, exactly as the wizard said, and spoke the rune. The silk sank into the metal. Frost patterns spread across the blade like growing ice. The steel drank the thread and held. He lifted it. The hilt warmed only to his grip. He had made the blade at last. Then he heard boots on the ice above the cave. Many of them. The soldiers had found the torchlight's source. The blade was forged, but untested, and they stood between him and the only way out.

The boots stopped above the cave. Theron gripped the ice blade and faced the tunnel. One man could hold that narrow mouth for a while. But soldiers crowded the far end, shields up, spears ready. He could not cut through them all. The forge-well still glowed behind him. The ore deposit lay untouched below. He had the blade and no way out. His fox slipped from the shadows. The beast's ore-flecked coat caught the forge light. It pressed its nose at the cave wall, where cold air leaked through a seam in the stone. Theron ran his hand along the gap. A second passage, choked with ice. Too thin to crawl through. He could not dig it fast enough. The soldiers started down the tunnel. A hiss filled the cave. Frost spread across the ice blade in his hand. The patterns deepened, and the air near the seam went colder. Then the ice in the gap cracked and lifted. A small shape squeezed through—wings like frozen glass, a serpent's body, horns no longer than his thumb. The winter dragon fairy. It had followed the cold the blade threw off. It settled on his wrist and stared at the blocked passage. Theron understood. The blade and the creature shared the same cold. He pressed the flat of the steel to the frozen seam. The fairy breathed along the ice. The crack widened, grew tall enough for a man. The soldiers rounded the last bend, spears down. Theron did not wait. He drove the ice blade into the lead man's shield. The steel bit clean through wood and iron. The soldier fell back. The others crowded, but the tunnel pinched them to two at a time. He parried a spear, cut the shaft, and shoved the body into the next man. Then he backed toward the widened seam. The fox went first. Theron followed, turning sideways through the gap. The winter dragon fairy darted ahead. Behind him a soldier thrust a spear through the opening. The point grazed his arm. He breathed out, pressed the blade's edge to the ice above, and the fairy breathed once more. The seam groaned and collapsed. Snow and stone sealed the passage. The shouting went muffled, then stopped. Theron stood in a black crawlspace, chest heaving, blood on his sleeve. The blade still glowed faint in his grip. He had escaped. But the sealed passage led up, away from the forge, into bare rock he did not know. His fox trotted ahead, and the fairy's wings threw pale light on the walls. The soldiers now knew the cave. They would ring the frozen river and wait. He had his weapon at last. Reaching the tyrant meant crossing open ice, with every road watched, and no safe ground behind him.