Read Chapter 10: Under the Iron Peak

The funicular labored up the mountainside, its cables groaning under a wind that carried the first bite of snow. Marcus pressed his forehead to the cold glass, watching Val Ferret shrink into a scatter of toy chalets below. Beside him, Sophie studied the brass plate with a jeweler’s loupe, tracing the wolf-mark engraved at its center.

“It matches the postcard,” she said. “Same stylized head, same long tongue curling into a spiral. Whatever your brother was warning you about, it’s the same family that built this vault.”

“The Bardi,” Marcus said. “I know.”

“You keep saying that, and then you don’t explain.” She lowered the loupe and fixed him with the stare she used when he was hiding something in a claims file. “The orphanage. The postcard. Your brother’s disappearance. You’ve been carrying this for years, Marcus, and I’ve been walking into mountains on the strength of a hunch.”

The funicular lurched past a rock shelf, and Marcus waited until the car steadied before answering. “My father worked for a Bardi holding company in Lyon. When he died, the family paid for our schooling. Sent a representative to the funeral. A woman with gray eyes and a gold ring. She told us we were ‘bound by blood ledger’ and that one day the debt would come due.”

“And Tom believed that?”

“Tom believed everything. That’s what made him useful to them.” Marcus watched a hawk ride the thermals above the valley. “When he vanished, I tried to contact the family. No one would confirm he’d ever worked for them. But the postcard arrived six months later. Wolf seal. No signature. Just the symbol and a warning—*the ledger keeps the bones of every debtor.* I thought it was a threat. Now I think it was a map.”

Sophie was quiet a long moment. The funicular crested the ridge, and the glacier bloomed into view—a white sheet draped across the shoulder of the mountain, crisscrossed with crevasses that looked like cracked porcelain.

“She’s using you,” Sophie said softly. “The Baroness. She knows you’ll walk into a collapsing ice field for Tom’s file.”

“I know.”

“And you’re going anyway.”

“I know that too.”

She folded the brass plate into her jacket and didn’t argue.

At the upper station, the wind hit them like a wall. The temperature had dropped to a knife’s edge, and the sky had gone from pale blue to the color of a bruise. A lone guide in a red anorak checked their permits, frowned at their lack of equipment, and pointed toward a steel cable bolted into the rock.

“The crevasse field is unstable,” he shouted over the gusts. “If you’re not back before dark, we don’t come looking.”

Marcus nodded and led Sophie onto the ice.

The map from the Baroness had been hand-copied in charcoal—a series of bearing lines drawn from the summit of the Grand Col Ferret to a trio of seracs that clustered like broken teeth. They followed the cable for an hour, then struck off across the glacier on foot. The snow was shallow but deceptive; beneath it, the ice hummed and groaned like a sleeping animal.

Sophie walked ahead, reading the compass bearings with a confidence Marcus envied. She’d spent summers in the Alps as a student, and it showed—her steps were economical, her weight balanced, her gaze fixed on the seracs as they grew from smudges to shapes.

“There,” she called back, pointing at a split in the ice where the glacier had sheared away from the rock wall. A narrow slot descended into blue darkness, its lips fringed with icicles. “That matches the plate’s cross-section.”

Marcus caught up to her, breathing hard. “Could be a natural crevasse.”

“Could be,” she agreed, pulling the brass plate from her jacket and comparing the engraved fissure lines to the real thing. “But the geometry is too neat. The walls are parallel. Twenty degrees east of north. That’s a path, not a fracture.”

They approached the slot carefully. The opening was just wide enough to admit one person at a time, its floor a ramp of compacted snow and rock debris that angled down into the glacier’s belly. Marcus went first, bracing his hands against the walls, feeling the cold seep through his gloves.

“I’ll take the first survey,” he said. “You stay here and keep watch.”

Sophie shook her head. “We split up, we lose heat twice as fast. You take the lead, I’ll light.”

He didn’t argue. They descended in silence, the sound of their footsteps swallowed by the ice. The crevasse narrowed, then opened into a low chamber where the walls sweat a thin film of meltwater. A faint blue light filtered through the glacier’s surface—that strange, aquamarine glow that made everything feel underwater.

At the far end of the chamber, half-buried in drifted snow, was a door.

It was cut from a single slab of granite, its surface smooth except for the relief carved into its center: the same wolf-head emblem from the postcard and the brass plate, its jaws open around a spiral that Marcus now recognized as a knot of numbers.

“I’ll be damned,” Marcus breathed.

Sophie pressed her palm to the wolf’s muzzle. “It’s warm.”

He touched it too. The stone was faintly warm, as if heated from below—geothermal springs, or the iron vault’s own machinery, dormant but alive beneath the ice.

The ground beneath them hummed.

“That’s not the vault,” Sophie said sharply.

Marcus looked up. A low rumble rolled across the glacier’s surface, amplified by the crevasse walls until it became a roar. Snow dust cascaded from the upper lip of the slot, then a solid wave of white poured down the opening like a waterfall.

“Avalanche!” Sophie shouted.

Marcus grabbed her arm and hauled her toward the door, pressing her against the granite as the snow slammed into the crevasse behind them. The world went white and silent, a crush of cold that drove the breath from his lungs. He felt Sophie twist beside him, heard her small cry of pain as the debris compressed them against the stone.

Then, as quickly as it had come, the force eased. The roar faded to a falling hiss, and the snow settled into stillness.

Marcus spat ice from his mouth and blinked. A pale glow still filtered through the packed snow above—they weren’t fully buried, but the crevasse’s entrance was gone, sealed under tons of fresh powder.

“Sophie.” He turned, shaking snow from his shoulders. She was on her knees at the base of the door, one hand clamped over her opposite shoulder. The sleeve of her jacket was darkening with blood.

“Rock,” she said through gritted teeth. “Caught me on the way in. It’s not deep, but I can’t move my arm.”

Marcus knelt beside her and peeled back the torn fabric. A gash ran along the outside of her shoulder, the kind of wound that bled heavily but looked worse than it was. He tore a strip from his own undershirt and wrapped it tight.

“We need to move,” he said. “That avalanche wasn’t natural.”

Sophie’s eyes met his. “Petrova.”

“Her men will be on the ridge by now. If they saw the slide, they’ll assume we’re buried.” He looked up at the white mass sealing the crevasse. “We are buried.”

“So we go forward.” Sophie pushed herself to her feet, swaying, and leaned against the door. “Your brother went through a door like this. The Baroness said he left a trail. This is the trail.”

Marcus studied the door’s carvings. The wolf’s spiral was not random—it was a cipher, each rotation a sequence of sharp angles that resolved into letters. He traced the first coil with his fingertip, feeling the pattern.

“It’s a Bardi lock,” he said slowly. “The spiral encodes a name. The family that commissioned it would carve the founder’s name into the stone. Warmth releases the mechanism.”

Sophie looked at him. “You know this how?”

Marcus didn’t answer. He pressed his palm flat against the wolf’s head, felt the heat rise into his skin, and spoke the name that had haunted his family for two generations.

“Petrus Bardi, founder of the house. Debtor’s mark, blood-keyed.”

The stone beneath his palm shuddered. Deep in the granite, something clicked—a mechanism as old as the Crusades, oiled by time and frost, waking for the first time in centuries. The wolf’s jaws split along an invisible seam, and the door swung inward on iron hinges rusted red.

Beyond it, a tunnel stretched into darkness, its walls lined with smelted iron plates stamped with merchant marks. The air was cold but dry, and it carried a faint smell of old oil and copper.

Sophie swayed again, and Marcus caught her before she fell.

“We go in,” she said. “Now.”

Marcus looked back at the sealed crevasse behind them. Somewhere above the snow, Petrova’s men would be converging on the upper ridge, waiting for the avalanche to settle. If they dug down, they’d find the entrance blocked. If they circled the mountain, they’d find another way in.

They had minutes, not hours.

He pulled Sophie’s good arm over his shoulder and stepped through the wolf’s mouth, into the iron dark.