Chapter 3 – Calibration

FREYA

The heat inside the forge hits like a physical blow, a dense wall of roasting air that smells of crushed charcoal, oxidized iron, and ancient sweat.

Einar is a mountain of a man with a beard stained yellow by smoke. When Astrid spoke to him in rapid, hushed Norse, he didn’t ask questions. He looked at the fresh blood dripping from Astrid’s palm, looked at my strange black clothes, and pointed to a low, heavy timber door at the back of the shop. A storeroom.

Now, the heavy oak door is bolted from the inside. We are sealed in a windowless space no larger than a modern walk-in closet, surrounded by stacks of iron ingots and leather bellows. The only light comes from the glowing embers of a small testing hearth in the corner.

Astrid collapses against the wattle-and-daub wall. The lethal, coiled grace that carried us across the rooftops vanishes. She slides down the timber planks, her breathing ragged, her skin suddenly the color of old parchment.

I drop to my knees beside her. The adrenaline is bleeding out of my own system, leaving a hollow, freezing ache in its wake. But the academic in me—the forensic osteologist who spends her life dissecting the mechanics of death—kicks in.

"You’re sick," I say, my mangled Norse clumsy on my tongue. "It isn’t just exhaustion."

Astrid’s head lolls against the wood. Her pale blue eyes are glassy, the pupils blown wide despite the glow of the hearth. "Gunnar’s ale," she rasps. "Before they bound me to the post. A parting gift to ensure I did not fight the ropes."

A toxin.

I reach out, hovering my hands over her chest, tracking the shallow, erratic rise and fall of her tunic. Her skin is radiating an unnatural heat, yet she is shivering violently. In the twenty-first century, I could draw blood, run a tox screen, identify the alkaloid, and administer an antagonist. Here, I have mud, charcoal, and a woman who is twelve centuries dead.

"I need to know what it is," I say, my voice tight. "If it’s monkshood, your heart will stop in an hour. If it’s henbane, you’ll hallucinate until your lungs paralyze."

Astrid looks at her left hand. The deep cut—my cut, transferred to her—is still oozing sluggishly, the charcoal of the Ehwaz rune smeared in the blood.

"We read it," she whispers, her voice a low scrape. "Through the mark."

I stare at her. "You want to transfer the poison?"

"Not the venom. The sensation." She forces herself to sit up, bracing her shoulder against a stack of iron ingots. "The rune transmits physical data. If you touch the mark, you can feel what my blood feels. Your… healer’s mind can name the rot."

The sheer recklessness of the magic terrifies me. "A transfer takes a year of life for an hour of skill. What does a sensory leak cost?"

"Nothing, if we calibrate it." Astrid reaches into her belt with a trembling hand and pulls out a piece of charred wood. She presses it against the earthen floor between us and draws a thick, solid black line in the dirt. "A stop protocol. The magic is hungry, Freya. It will pull everything if you let it. If the connection becomes too deep, if the data threatens to pull you under, you break the line. You drag your hand across the charcoal. The bridge snaps."

It is a mechanical failsafe for a supernatural bond. A brutally pragmatic, structural rule.

"And the cost?" I ask, my eyes locked on the black line.

"Sensation does not burn time," Astrid says, her gaze heavy, pinning me in the dark. "It balances the ledger of the flesh. We already paid it on the roof."

I look down at my right palm. The silver scar gleams in the low light. The phantom ache of it is entirely mine now.

"Open the bridge," she orders softly. "Read the rot."

I do not want to touch her. Every time skin meets skin, the paradox deepens, threatening to pull the museum, my career, my entire reality down into the mud of York. But her breathing is catching in her throat, a wet, rattling sound that sets off every forensic alarm in my brain.

I reach out. I align my scarred palm with her bleeding one. I press down.

ASTRID

The connection does not hit with the violent, ripping force of the pyre. It slips beneath the skin, a slow, suffocating tide of heat.

I feel her consent click into place, a mental latch opening in the dark.

I guide the bridge. I do not push my muscles or my balance; I push the raw, chemical agony in my veins across the divide.

Freya gasps. Her back arches, her eyes snapping shut as the sensory data floods her nervous system.

I feel the echo of it hitting her. The crushing weight on the chest, the sharp, metallic taste of copper and ash at the back of the throat, the terrifying numbness creeping up the extremities. It is my pain, but I am experiencing it through the hyper-sensitive, analytical filter of her modern mind.

The intimacy of it is staggering. We are sharing a single physiological state. I feel the exact moment her heart rate spikes in panic, a frantic flutter against her ribs that echoes in my own chest. I feel the sweat break out on her collarbones, cooling in the draft of the forge.

Breathe, I project the thought down the connection, focusing my remaining strength into the grip of our hands.

Freya’s breathing syncs with mine. We are locked in a closed circuit, two bodies inhaling the same smoke-thickened air, exhaling the same desperate heat. The proximity is a physical weight. The air in the tiny storeroom vanishes, replaced by the scent of her skin—a strange, sterile soap completely alien to this world, undercut by the sharp tang of fear.

"Henbane," Freya chokes out, her eyes flying open. They are completely black in the shadows, dilated and terrified. "And something else. Foxglove. Digitalis. It’s slowing the heart."

She tries to pull her hand away, but the muscle memory of the connection—the deep, runic gravity—makes her fingers curl into mine instead. She is trembling, the borrowed venom wreaking havoc on her unaccustomed nerves.

"Can you purge it?" I ask, my voice a mere breath against the space between us.

"I… I don’t know." She stares at my face, her analytical mind fighting a war against the physical overload. "In a hospital, yes. Here? We need charcoal. Pure charcoal to absorb the alkaloids in your stomach. And water."

She looks away, her gaze landing on the cold iron tools stacked against the wall. The connection hums, transmitting a sudden, jagged spike of cognitive dissonance from her mind to mine. It is a wave of profound, sickening guilt.

She is looking at the forge, but she is seeing something else. A glass box. A white room. Millions of unseen faces.

"If I save you," Freya whispers, the words bleeding across the bond before she even speaks them aloud, "if I pull this poison out of you tonight… the grave is empty."

FREYA

The reality of the paradox crashes over me, heavier than the phantom poison in my veins.

Grave 514. The intact stratigraphy. The undisturbed ash layer. The carbon-dating that proved this exact woman died in 889 AD, solidifying a historical narrative that shaped entire academic fields.

If Astrid lives, the skeleton vanishes from my lab. The grant money dissolves. The timeline I belong to—the world built on the foundation of these ancient deaths—might simply cease to exist. I am holding the hand of a ghost, and the ghost is asking me to erase my own reality.

I look at the line of charcoal on the dirt floor. The stop protocol. All I have to do is break the line. I sever the connection, step out of the forge, and let the henbane and foxglove do what history demands.

Astrid feels the hesitation. The bridge is still open, our palms pressed tight. She feels the cold, calculated arithmetic of my modern mind weighing her single life against the integrity of a timeline she cannot comprehend.

Her fingers tighten around mine, a bruising, desperate grip.

"You weigh my blood against dirt," she says. Her Norse is guttural, stripping away all pretense. The anger in her pale eyes is a physical force, transmitted straight through the rune. "You look at me and you see a corpse that belongs in your box. You jumped on the pyre to save your prize, not a woman."

"That isn’t true," I say, my voice shaking. But the guilt flaring across our connected skin betrays me. I did see her as an artifact. I saw history as an object to be preserved, not a living, breathing, bleeding terror.

"Break the line, Freya," she challenges, her chin lifting, defiant even as the poison drags her into the dark. "Protect your future. Leave me to the rot."

She is giving me the choice. She is not pulling the magic. She is sitting in the dark, dying, and offering me the agency to walk away.

I look at the silver scar on my hand. The ledger of the flesh. We are already bound.

I do not reach for the charcoal line. Instead, I shift my weight forward, closing the distance between us, pressing my palm harder against hers. I choose the ghost over the glass box.

"I need you to stay awake," I say fiercely, letting my own unpoisoned adrenaline pump across the bridge, forcing her heart rate to match mine. "Tell Einar we need pure willow charcoal from the hearth. Now."

ASTRID

The surge of raw, uncorrupted energy hits me like a physical blow.

Freya does not break the line. She leans into the magic, throwing the sheer, caffeinated speed of her modern metabolism into my failing system. It is a blinding, terrifying rush of life.

I shout for Einar. The heavy oak door cracks open. He takes one look at our linked hands and the glowing charcoal rune, mutters a curse to Odin, and turns to the main hearth.

But as the rush of Freya’s energy floods my veins, the bridge widens.

The calibration was meant to transmit sensation, to read the poison. But Freya’s desperation pushes the connection too deep. The barrier between physical data and memory buckles.

A pulse of pure, unadulterated imagery fires down my arm and detonates in my skull.

I am standing in a room made of pure, blinding white light. The air is unnaturally cold, completely devoid of smell.

I am looking down into a rectangular pit lined with dark, perfectly squared earth. But it is not a grave dug by thralls. It is a surgical excavation.

My own hands—smooth, uncalloused, clad in strange blue skin—are holding a heavy iron sword. The blade is broken halfway down the fuller. The metal is pitted and crusted with rust.

I am weeping. A deep, silent, chest-heaving grief that threatens to crack my ribs.

I lower the broken sword into the dirt. I place it exactly parallel to the femurs of a skeletal body. A body that I know, with an absolute, terrifying certainty, is mine.

The memory rips out of me.

I jerk backward, breaking the physical contact, my spine slamming against the timber wall. The sensory link snaps. The storeroom plunges back into the dim, smoke-filled reality of the forge.

My chest heaves, dragging in the smell of slag and sulfur.

Freya is kneeling in the dirt, her hand hovering in the empty space between us, her face ashen. She looks as if she has just been struck by lightning.

She knows what I saw. The bridge is a two-way conduit. As the memory bled into me, she felt the shock of its extraction.

"You did not just find my grave," I whisper, the Norse syllables tasting like ash. My heart is hammering a frantic, erratic rhythm that no longer has anything to do with the henbane.

I stare at her, really seeing the woman who fell from the sky. Not a witch. Not a spirit.

"You put the sword there," I say, the realization locking into place with the terrifying precision of a falling axe. "You buried me."

FREYA

The air in the storeroom evaporates.

The memory wasn’t supposed to exist. I didn’t bury Grave 514. I excavated it. I was a PhD student in York, thousands of miles away from whoever dug that pit in the late ninth century.

But the memory that just tore through the runic bridge was mine. The grief was mine. The sterile blue nitrile gloves were on my hands. I felt the exact weight of the oxidized iron as I placed it beside the bones.

It was a memory of something I have not yet done.

The paradox isn’t just threatening my timeline; it is looping.

Astrid pushes herself off the wall, ignoring the poison sluggishly warring with my transferred adrenaline. She crosses the tiny space, her movements sharp, predatory. The space between us vanishes.

She drops to her knees directly in front of me, caging me against the stacks of iron ingots. Her hands come down on either side of my head, slamming against the timber.

The proximity is absolute. I can feel the heat radiating off her soaked wool tunic. I can smell the rain, the woodsmoke, and the dark, metallic tang of her blood.

"What are you?" she demands, her voice a low, dangerous vibration that resonates in my own chest.

She is looking at me not as an anomaly, but as the architect of her death. And yet, there is no blade in her hand. There is only a fierce, terrifying gravity pulling us toward the center of the tiny, dark room.

My academic detachment shatters. The woman I have studied for eight months is inches away, her breath ghosting across my lips. The asymmetrical jaw, the pale, piercing eyes, the sheer, overwhelming presence of a warrior who refuses to be history.

I look up at her. The fear is gone, swallowed by a sudden, irrational heat that has nothing to do with the forge.

"I don’t know," I whisper, my gaze dropping to her mouth.

Astrid’s breath catches. The anger in her eyes fractures, replaced by something entirely different. A raw, unshielded recognition. The tension in her arms shifts, the cage becoming a tether. She leans in, the distance between us shrinking to a fraction of an inch, the undeniable pull of the rune humming in the air between our lips—

A massive, splintering crash echoes through the front of the shop.

Wood shatters. Heavy boots hit the floorboards.

"Einar!" a voice roars, thick with the dialect of Gunnar’s men. "We know they came this way. Burn the forge if you have to, but find the witch!"

Astrid freezes, her eyes snapping back to mine, the intimacy instantly hardening into the cold, lethal reality of the hunt.

—