Prologue

The Murder That Broke Its Promise

Dead vows glowed brighter than living ones.

Nessa Calder learned that at twenty-seven, kneeling in the blood of a murdered ambassador while the Nightglass Court celebrated three floors above her.

Music vibrated through the crystal ceiling. Courtiers danced beneath chandeliers grown from frozen lightning. Down in the service corridor, Ambassador Pell lay with his throat intact, his heart stopped, and a black thorn pushing through the center of his wedding ring.

No wound. No poison. No visible spell.

Only a promise broken hard enough to kill him.

Nessa snapped on a pair of silver forensic gloves and touched two fingers to the ring.

The corridor vanished.

Truth exploded behind her eyes.

Pell stood before a nightglass mirror, sweating through ceremonial silk. A masked woman waited in the reflection though the room behind him was empty. Her mask was white, smooth, and split by one vertical crack.

“I kept my oath,” Pell whispered.

The woman tilted her head.

“You kept the wording.”

The thorn emerged from the ring. Pell gasped. The mirror filled with blood-dark light, and a man’s voice spoke from somewhere beyond the vision.

Bring me the truth-seeker.

Nessa tore her hand away.

The real corridor slammed back into place. She tasted iron. Her gloves smoked at the fingertips.

Captain Rhys caught her elbow. “What did you see?”

“A staged execution.” Nessa forced herself upright. “Someone activated a foundational vow through his marriage ring.”

“Impossible.”

“Then arrest the impossible.”

Rhys glanced toward the staircase. The music above had changed to a stately court waltz. “Keep your voice down.”

That was the first law of Nightglass: truth mattered only when spoken at a politically convenient volume.

Nessa crouched again. Around the corpse, hairline fractures spread through the glass floor. Each crack held a different memory—Pell accepting bribes, Pell kissing a lover, Pell kneeling before a throne hidden by thorns.

One fracture reflected Nessa herself.

Except her reflection was not alone.

A tall fae man stood behind her, broad-shouldered and dressed in a dark court coat open at the throat. Black thorns climbed his skin like veins. His face was beautiful in the predatory manner of a blade: sharp cheekbones, hard mouth, eyes pale enough to look carved from winter.

Varek Thorn.

The Nightglass Tyrant.

Nessa turned.

No one stood there.

In the reflection, Varek lifted one finger to his lips.

Then he smiled.

The mirror-fracture cut her glove.

Blood welled across her palm. Every glass surface in the corridor answered with a single ringing note.

Rhys swore. “You triggered something.”

“No.” Nessa watched her blood crawl against gravity toward Pell’s ring. “Something recognized me.”

The black thorn dissolved. In its place appeared a miniature glass seal stamped with the crest of the sovereign throne.

Evidence.

Proof that Pell’s death reached the highest level of the court.

Nessa reached for it.

The lights went out.

Not darkness. Nightglass.

The walls became transparent and showed her a hundred impossible rooms at once: a woman screaming behind an oracle mask, lords trading memories in crystal bottles, Varek seated on a fractured throne while blood ran from his hands. At the center of every image stood the same masked woman.

Something about her posture hurt.

The slight turn of one shoulder. The way she curled her left hand when afraid.

Elara had done that.

Nessa’s sister had been dead for twelve years.

“Elara?”

The masked woman struck the inside of the glass.

The vision shattered.

Nessa found herself alone. Pell’s body was gone. Captain Rhys was gone. Even the music above had stopped.

At the far end of the corridor, Varek Thorn stepped from a mirror.

He was taller than his reflection had suggested. Magic pressed around him with the weight of an approaching storm. The thorns beneath his open collar pulsed once when his gaze found the blood on Nessa’s palm.

“You should not have touched the seal,” he said.

Nessa drew the slim forensic blade from her sleeve. “You should not have left evidence.”

His eyes warmed with something far more dangerous than amusement. “That is why I need you.”

“To clean your murders?”

“To survive mine.”

The glass behind him filled with masked courtiers. They watched without faces, each holding a vial of stolen memory.

Nessa raised the blade. “Where is my sister?”

For the first time, Varek’s expression changed.

Regret. Brief, controlled, unmistakable.

“Behind a truth you are not yet strong enough to touch.”

“Try me.”

She lunged.

Varek caught her wrist, but he did not twist or force it down. He held perfectly still while her blade rested against the pulse in his throat. Their faces were close enough that his breath warmed her mouth.

“Good,” he murmured. “The court said grief had softened you.”

“The court lies.”

“About everything.”

The floor beneath them fractured into a web of violet light. Nessa felt a tether fasten around her heartbeat—not ownership, not obedience, but a brutal shared circuit. If she drove the blade home, the magic would cut them both.

Varek released her wrist.

She kept the knife at his throat.

“You are abducting the wrong woman,” she said.

“No.” The mirrors opened behind him like black wings. “I am finally abducting the one woman who can put me on trial.”

The corridor folded.

As the Nightglass Court dragged her into its hidden heart, Nessa heard the masked oracle whisper through every shard.

Little sister, do not believe him.

Then Varek’s voice answered from beside her.

“Do not believe her either.”