The silence between them was a living thing, thick as the damp air that clung to the stone. Cleo could feel the weight of it pressing against her ears, broken only by the distant creak of the castle settling and that low, persistent growl vibrating through the floorboards. She looked down at their joined hands, at the dried blood crusted dark against both their palms, and tried to remember what it had felt like when the blade had cut—the sharp, bright sting of it, the moment she'd understood there was no going back.
Nico's thumb moved against her knuckles. A small, absent gesture, like he wasn't even aware he was doing it. Through the oath, she felt the steady thrum of his heartbeat—slower now than it had been when her father was here, but still carrying an undercurrent of tension that made her own chest tight.
"You're doing it again," he said quietly.
She blinked. "Doing what?"
"That thing with your jaw. Like you're grinding your teeth into powder."
Cleo forced herself to relax, to unclench muscles she hadn't realized were tight. "I don't do that."
"You do." His lips curved into that half-smile, the one that softened the scarred line of his brow and made him look almost boyish. "You've done it every time you've been about to say something you think I won't like. It's a tell."
"I don't have tells."
"Everyone has tells." He tilted his head, amber eyes catching the torchlight. "You bite your lip when you're thinking. You grind your jaw when you're scared. And you talk too fast when you're lying."
She opened her mouth to protest, then closed it. He was right, and the fact that he'd noticed—that he'd been watching her closely enough to notice—sent a strange warmth curling through her chest.
"Fine," she said. "Maybe I was grinding my jaw. It's been a long night."
"It has." His voice softened. "But it's over now."
She wanted to believe him. She wanted to let the warmth of his hand in hers convince her that the worst had passed, that her father's warning was just the frightened words of a man who'd loved and lost, that the pack loyalty Nico carried like a second skin wouldn't tear them apart. But the dried blood on her palm was a reminder she couldn't shake—a physical proof that she'd crossed a line she could never uncross.
"Do you think he'll come back?" she asked.
Nico's jaw tightened. "Your father?"
"He made a promise to my mother. On her deathbed." The words felt strange in her mouth, heavy with a weight she'd never fully understood. "He's not going to give up just because he walked away."
"He doesn't get a choice." There was steel in Nico's voice, a hard edge that made the growl under the floorboards seem louder. "You made your choice. That's what matters."
"Is it?" She pulled her hand free, and immediately felt the absence of his warmth like a cold draft. "Because I'm not sure I know what my choice means yet. I'm not sure any of us do."
She pressed her palm against the cold stone at her back, feeling the rough texture of it through her robes. The damp air clung to her skin, carrying the metallic tang of old blood and something else—something green and living, like the earth after rain. The castle was old, older than the academy itself, and she could feel its age in the way the shadows seemed to breathe, in the way the torchlight flickered as if something had passed between it and her.
Nico stepped closer. Not crowding her, but close enough that she could feel the heat radiating off him, could smell the sharp cedar and smoke scent that clung to his clothes.
"I know what it means," he said, his voice low. "It means you're mine. And I'm yours. Whatever comes after that, we face together."
She looked up at him, at the amber eyes that held no judgment, no fear—only that fierce, unwavering determination she'd seen before. The oath pulsed between them, a warm current that made her breath catch.
"Together," she repeated, testing the word.
"Together."
The growl under the floorboards intensified, a low rumble that seemed to shake the very stones. Cleo felt it in her bones, a primal warning that made the hairs on the back of her neck stand up. She pushed off the wall, her hand instinctively reaching for the wand at her hip.
"Did you hear that?" she whispered.
Nico's eyes narrowed, scanning the shadows. "It's been doing that since we got here."
"It's getting louder."
"It's just the castle settling." But his hand moved to the hilt of the blade at his belt, a habitual gesture she'd seen him make a dozen times. "Old buildings make noise."
"This isn't a normal building." She took a step forward, peering into the darkness beyond the torchlight. "This is a magical academy. Nothing here is just what it seems."
Nico was quiet for a moment, and she felt his heartbeat through the oath—steady, but with an undercurrent of something sharper. Wariness, maybe. Or the instinctive alertness of a predator who knew he was being watched.
"Come on," he said, reaching for her hand. "We should get out of this corridor."
She took his hand, letting the warmth of his fingers lace through hers. The dried blood on their palms flaked against her skin, a reminder of what they'd done. The growl under the floorboards seemed to follow them as they started walking, a low, constant presence that made her feel like something was tracking their every step.
They'd made it maybe a dozen paces when the air in front of them rippled. Cleo stopped short, her free hand flying to her wand, and watched as a small creature popped into existence with a soft crack that echoed off the stone walls.
The house-elf was old, its skin wrinkled and grey, with large, bat-like ears that twitched nervously as it looked between them. It wore a threadbare tea towel draped over its narrow shoulders, and its eyes—huge and watery—were fixed on Cleo with an intensity that made her uneasy.
"Miss Ashworth," it said, its voice a high, tremulous squeak. "I has been sent to find you. Professor Vane, he requires your presence."
Cleo's heart stuttered. "Now?"
"Yes, miss. Immediately." The elf's hands trembled as it held out a folded piece of parchment, sealed with a blob of dark wax. "He said to give you this. He said you would understand."
She took the note, her fingers brushing against the elf's trembling ones. The seal was unbroken, a deep crimson that caught the torchlight like a drop of blood. She could feel the weight of it in her palm, the promise of something she wasn't sure she was ready to face.
Nico stepped closer, his shoulder brushing hers. "What does it say?"
"I haven't opened it yet."
"Then open it."
She hesitated, her thumb tracing the edge of the wax seal. Professor Vane had been a constant presence in her life since she'd arrived at the academy—a mentor, a protector, a man who saw the potential in her that others had missed. But he'd also looked at her tonight with something she hadn't recognized, a fear that had nothing to do with the blade Nico had pressed to his throat.
"He knows," she said quietly. "About the oath. About everything."
"I know."
"He warned us we'd need to be strong enough to survive it."
"And we will be."
She looked up at him, at the steady certainty in his amber eyes, and felt something loosen in her chest. The oath pulsed between them, warm and alive, a reminder that she wasn't alone in this.
"Will you come with me?" she asked.
Nico's hand found hers again, squeezing gently. "I'm not going anywhere."
The house-elf shifted its weight, its ears twitching. "Professor Vane, he said only Miss Ashworth. He said it was important."
"I don't care what he said." Nico's voice was flat, unyielding. "If she goes, I go."
The elf's eyes went wide, and it looked between them with something that might have been fear—or maybe just the frantic desperation of a creature caught between two impossible demands. It opened its mouth, as if to argue, then seemed to think better of it. Instead, it just nodded, its ears drooping.
"As you wish, sir. I will... I will tell the professor."
The elf started to back away, its bare feet shuffling against the stone floor. Cleo watched it go, the note still unopened in her hand, the weight of it pressing against her palm like a promise she couldn't escape.
"Wait," she said. The elf froze, its eyes swiveling back to her. "What did you mean, the professor requires my presence immediately? Is something wrong?"
The elf's ears twitched again, and it glanced at Nico before looking back at her. "I... I cannot say, miss. Professor Vane, he did not tell me. He only said it was urgent, and that you must come at once."
"And the note?" She held it up. "What's in it?"
"I do not know, miss. I was told only to deliver it." The elf's voice dropped to a whisper, barely audible over the growl that still rumbled through the floorboards. "But I heard him speaking with someone before I was sent. I heard him say... I heard him say the wolves are asking questions."
The words hit Cleo like a physical blow. She felt Nico tense beside her, felt the spike of his heartbeat through the oath—fear, or fury, she couldn't tell.
"What kind of questions?" she asked, her voice sharper than she intended.
The elf shook its head, its ears flapping. "I do not know, miss. I am sorry. I am only a house-elf. I am not told such things."
"But you heard something." Nico stepped forward, his presence suddenly larger, more threatening. "You heard more than you're saying."
The elf cowered, its hands raised as if to ward off a blow. "Please, sir. I cannot—I am not allowed—"
"Nico." Cleo put a hand on his arm, feeling the tension coiled beneath his skin. "Enough."
He stopped, but she could feel the anger still simmering in him, a low, dangerous heat that made the air between them feel charged. The elf looked at her with something like gratitude, its watery eyes blinking rapidly.
"I should go," it said, its voice trembling. "Professor Vane, he will be waiting."
"Thank you," Cleo said. "For delivering the note. And for telling us what you heard."
The elf nodded, then vanished with another soft crack, leaving them alone in the corridor. The growl under the floorboards seemed to fade with it, settling into a low, almost imperceptible hum that she might have imagined if she hadn't felt it in her bones.
Cleo looked down at the note in her hand. The seal was still unbroken, a dark red blob that seemed to pulse in the torchlight. She could feel the weight of it, the promise of something she wasn't ready to face.
"Wolves asking questions," she said quietly. "That could mean anything."
"It could mean my pack is already looking for me." Nico's voice was flat, controlled, but she felt the tremor beneath it through the oath. "They'll have noticed I'm gone by now. They'll have sent someone to find out why."
"And if they find out about the oath?"
"They'll try to break it." He met her eyes, and she saw the fear there—not for himself, but for her. "They'll try to hurt you to get to me."
"Let them try." She said it with more bravado than she felt, but something in her voice must have convinced him, because the tension in his shoulders eased slightly.
He reached out, his hand cupping her cheek. His palm was warm against her skin, callused from years of fighting, and she leaned into the touch without thinking.
"We'll figure this out," he said, his voice low. "Together."
She nodded, her throat too tight for words. The oath pulsed between them, warm and alive, a reminder that whatever came next, she wouldn't face it alone.
And then, from the shadows at the far end of the corridor, there was a whisper of movement.
Cleo's hand flew to her wand, her body going rigid. Nico was already turning, his blade half-drawn, his amber eyes scanning the darkness with predatory focus.
"Who's there?" he called, his voice sharp as a blade's edge.
For a moment, there was only silence. The growl under the floorboards had gone completely quiet, as if the castle itself was holding its breath. And then Sera stepped out of the shadows, her green eyes unreadable in the flickering torchlight.
"It's just me," she said, her voice quiet, stripped of its usual playful edge. She looked at Cleo, then at Nico, then back at Cleo. "We need to talk."