How to kill an immortal wolf

The vampire didn’t even see death coming.

Seraphine Vale stood in the shadowed archway of the abandoned cathedral, her breathing steady, her pulse calm too calm for someone about to end a life. Moonlight spilled through the shattered stained-glass windows, painting the floor in fractured colors. Red. Blue. Gold.

The vampire lord laughed as he paced the altar, drunk on stolen blood and power. He was ancient, bloated with immortality, arrogant enough to believe no human could touch him.

That arrogance was why he was already dead.

Seraphine released the blade.

It flew clean, precise no hesitation, no wasted motion. The silver-edged weapon pierced his heart just as he turned, surprise widening his crimson eyes. He staggered, choking, clawing at the air as his body began to burn from the inside out.

“Impossible,” he rasped.

Seraphine stepped forward as his body collapsed into ash.

“Everything dies,” she said flatly. “Eventually.”

The ashes scattered across the cathedral floor, carried away by a cold night wind. Seraphine didn’t watch them fade. She was already wiping her blade clean, her movements efficient, detached.

Mission complete.

A faint hum stirred beneath her skin the familiar pull that came after every kill. Not satisfaction. Not relief. Just… silence.

She turned and walked away.

The Aegis headquarters was buried beneath a derelict government building, its existence scrubbed from all official records. Steel corridors. White lights. No windows. No mercy.

Seraphine walked its halls like a ghost.

“Agent Vale,” a voice called.

She stopped.

Commander Halvorsen waited in the briefing room, hands clasped behind his back. His gray eyes swept over her, sharp and assessing, as if searching for cracks that never appeared.

“You’re back early,” he said.

“The target was careless,” Seraphine replied. “Immortality makes them lazy.”

A flicker of approval crossed his face. “As expected.”

She didn’t sit when he gestured to the chair. She never did.

Halvorsen studied her for a long moment. Then he exhaled slowly, as if bracing himself.

“You’ve completed every mission we’ve ever given you,” he said. “You’ve never failed. Never hesitated.”

Seraphine’s jaw tightened. “Why does this sound like a farewell?”

Halvorsen tapped the control panel on the table. The screen lit up, projecting an image so dark it took a moment to resolve.

A man stood at the center of the hologram.

Tall. Broad-shouldered. Dressed in black.

His presence radiated power even through a screen. Cold. Ancient. Predatory.

Seraphine’s chest tightened just slightly. Enough to notice.

“Who is he?” she asked.

Halvorsen’s voice dropped. “Lucien Blackthorn.”

The name echoed through the room like a warning.

“Alpha of the Nightfall Pack,” he continued. “Immortal. Unkillable. Over three hundred years old.”

Seraphine’s eyes narrowed. “Everyone dies.”

Halvorsen met her gaze. “Not him.”

Silence stretched between them.

“You’re assigning me an impossible mission,” she said finally.

“No,” Halvorsen replied quietly. “We’re assigning you your final one.”

Her fingers curled at her side.

“We believe Lucien Blackthorn is the keystone holding immortal wolves together,” he went on. “As long as he exists, they multiply. Expand. Threaten the balance.”

Seraphine stared at the image, something strange twisting in her gut.

“He doesn’t look like a monster,” she said.

Halvorsen’s expression hardened. “That’s how they survive.”

The screen shifted, revealing maps, pack territories, surveillance footage. Wolves in human form. Wolves mid-shift. Wolves covered in blood.

“You are to infiltrate Nightfall territory,” Halvorsen said. “Get close. Earn his trust.”

“And then?” Seraphine asked, though she already knew.

“Kill him.”

She looked back at Lucien’s image. His eyes were dark, unreadable even frozen in time.

“Why me?” she asked.

Halvorsen hesitated.

Then he said the words that made her blood run cold.

“Because you are the only one who can.”

Nightfall territory lay deep within the mountains, where the forest grew thick and the air hummed with something ancient. Seraphine crossed the boundary at dusk, her boots silent against the forest floor.

The moment she stepped into pack land, she felt it.

Pressure.

Like unseen eyes snapping open.

She slowed, senses sharpening, every muscle coiled for violence. Wolves watched her from the shadows she could feel them, even if she couldn’t see them.

She didn’t flinch.

A low growl rippled through the trees.

“Enough.”

The voice cut through the forest like a blade.

The pressure intensified and then parted.

Seraphine turned slowly.

He stood several feet away, as if he had always been there.

Lucien Blackthorn.

Up close, he was worse. More dangerous. His presence pressed against her skin, heavy and commanding. Power rolled off him in waves, dark and restrained.

His gaze locked onto hers.

Something inside her reacted sharp, instinctive, wrong.

Lucien’s nostrils flared.

His eyes darkened.

“What are you?” he murmured.

Seraphine forced her face into calm neutrality, even as her pulse betrayed her.

“Lost,” she said evenly. “I was told there was a town nearby.”

Lucien didn’t answer immediately.

He stepped closer.

Too close.

The air between them crackled, charged with something she didn’t understand. His gaze dropped just for a second to her wrist, where her pulse beat fast and strong.

Hunger flashed across his face.

Not for blood.

For her.

Lucien stilled abruptly, his expression shifting to something colder, sharper.

“Leave,” he said.

The command was absolute.

Seraphine held his gaze, refusing to retreat.

Something dangerous flickered behind his eyes.

“Interesting,” he said quietly. “You’re not afraid.”

She lifted her chin. “Should I be?”

Lucien smiled.

It wasn’t kind.

It wasn’t cruel.

It was the smile of something that had lived too long and survived everything.

“Yes,” he said.

And for the first time in her life, Seraphine felt it

Not fear.

But the unmistakable sensation that stepping closer to this man would ruin her forever.