The thing in the crack had eyes like burnt coins.
Cass couldn't look away. The air around the dueling platform tasted like copper and old smoke, and the ring on his finger was hot enough to brand. Mara had her blade out, angled low, but she wasn't watching the crack anymore. She was watching him.
"Your ring," she said. Her voice was flat. "It's doing that."
"I know." Cass tried to pull it off. The band wouldn't budge. The glow pulsed in time with the markings on the platform, the same looping sigil his father had carved into every contract, every vault door, every piece of the Veyr name that mattered. "I didn't know it would—"
"Bullshit." Mara stepped closer. The knife stayed ready. "You said you've done this day before. You knew the duel would trigger something. You brought the key anyway."
She wasn't wrong. Cass had worn the ring every loop because taking it off meant questions from his father's steward, and questions meant delays he couldn't afford. But he hadn't known. Not until now. Not until the crack opened and the ring lit up like a beacon.
"I didn't bring it on purpose," Cass said. He held up his hand so she could see the way the metal had fused to his skin, the way the inscription glowed white-hot against his knuckle. "It's stuck. It's been stuck since my father died."
Mara's eyes narrowed. She didn't lower the knife. "Then we cut the finger off."
"That won't work." Cass didn't know how he knew that, but he did. The ring wasn't just metal. It was a lock. A name. A claim. "If I lose the ring, the ward doesn't open. It resets."
"Resets what?"
"Everything." Cass swallowed. The crack was spreading, slow but steady, like ice across glass. The burnt-coin eyes hadn't blinked. "The loop. The day. Whatever's holding this thing together."
Mara stared at him for three long seconds. Then she sheathed the knife and grabbed his wrist. Her fingers were cold. Her grip was not.
"Show me," she said.
Cass didn't argue. He turned toward the edge of the platform, where the old tower hall rose above the practice yard like a broken tooth. No one went into the tower. It had been condemned since before either of them enrolled, locked down with wards so thick the air around it shimmered in the heat. But now, with the ring burning and the crack spreading, Cass could see the door.
It was open.
"There," he said, pointing. "That's where it starts."
Mara followed his gaze. Her hand was still on his wrist. "I don't see a door."
"You're not wearing the ring."
She let go. For a moment Cass thought she'd walk away, leave him to deal with whatever his family had buried in the tower. Instead, she looked back at the crack, at the thing with too many teeth beginning to push through, and made a decision.
"Fine," Mara said. "We go in. But if this is a trap, I'm putting the knife in your spine before that thing gets a chance."
Cass almost laughed. "Deal."
They ran.
The yard was chaos now. Students shouting, professors trying to hold the ward line, someone screaming about a breach in the east hall. No one looked at Cass and Mara as they sprinted toward the tower. No one saw the door.
Cass hit the threshold first. The air went cold, then hot, then something else—thick, wrong, like breathing through wool. Mara was right behind him. She stumbled when she crossed, caught herself on the doorframe, and swore.
"What the hell is this place?"
The tower hall was smaller than it should've been. The walls were stone, the same gray as the rest of Oryx, but the markings weren't. Sigils covered every surface, floor to ceiling, glowing faint red in the dim light. Cass recognized some of them. Binding circles. Anchor points. The kind of magic his father had used to seal vaults and bloodlines and anything else that needed to stay buried.
"It's a vault," Cass said. His voice echoed wrong. "My family's vault."
Mara turned on him. "Your family built this? Here?"
"I don't know." Cass moved deeper into the hall, following the line of sigils toward the back wall. The ring was still burning. The glow led him forward like a leash. "My father never told me. He just said the ring was important. That I'd know when I needed it."
"And you thought that was normal."
"Nothing about my father was normal."
Mara didn't answer. She was looking at the walls now, at the sigils, her face tight. Cass had seen that look before—in the last loop, right before she died. She was piecing something together. Something bad.
"These aren't just wards," Mara said slowly. "These are anchors. Someone locked something here. Something alive."
Cass stopped walking. The ring flared, hot enough to make him hiss, and the back wall shimmered. A door appeared. Not stone. Not wood. Just a gap in the air, lined with the same burning script as the ring.
"It's waiting," Cass said.
Mara moved up beside him. Close enough that he could feel the heat coming off her, the tight-coiled energy of someone ready to fight or run. She looked at the door. Then at him.
"If we open that, what comes out?"
"I don't know."
"Guess."
Cass thought about the crack. The eyes. The way the ring had lit up the moment the duel went wrong. He thought about his father's last letter, the one the steward had given him the morning after the funeral. *Wear the ring. Keep it close. When the bells ring twice, you'll understand.*
He hadn't understood. He still didn't.
"Something my father locked away," Cass said finally. "Something he thought I could control."
Mara's jaw tightened. "Can you?"
"No."
She should've walked away. Should've left him there, gone back to the yard, let the loop reset and start over. Instead, she held out her hand.
"Give me the ring," Mara said.
Cass stared at her. "What?"
"You said it's a key. You said it won't come off." Her fingers were steady. Her eyes were not. "So give it to me anyway. Let me choose whether we open that door."
It was the stupidest thing anyone had ever asked him to do. The ring wouldn't come off. He'd tried. The metal had fused to his skin the day his father died, and nothing—not heat, not cold, not the best enchanters in the capital—had been able to break the seal.
But when Mara's hand closed over his, when her thumb pressed against the band, the ring slid off like water.
Cass sucked in a breath. His finger was raw underneath, the skin pale and new. Mara held the ring up between them, the glow reflected in her eyes, and for a second neither of them moved.
"I don't trust you," Mara said quietly.
"I know."
"But I trust that thing in the yard even less." She looked at the door. Then back at him. "If this kills us, I'm haunting you."
"Get in line."
Mara almost smiled. Then she slipped the ring onto her own finger, stepped forward, and pressed her palm flat against the door.
The hall went silent. The sigils flared white, then red, then something darker. The door opened.
And on the other side, in a voice Cass hadn't heard since the funeral, his father spoke.
"Welcome back, failure."