Mark tensed, but Julian held on to him. Cristina had rejoined them and was pressing her hand over her mouth; she stared as Erec finished with Kieran and stepped back.

Blood welled from the lacerations where the thorn bindings cut into Kieran’s skin. His head had fallen back against the trunk of the tree; Emma could see his silver eye, and the black one as well, both half-lidded. There were bruises on his pale skin, on his cheek and above his hip where his shirt was torn.

There was a commotion atop the pavilion, and a single blast from a horn shattered the murmuring quiet in the clearing. The gentry looked up. A tall figure had appeared beside the throne. He was all in white, salt-white, with a doublet of white silk and gauntlets of white bone. White horns curled from either side of his head, startling against the blackness of his hair. A gold band encircled his forehead.

Cristina exhaled. “The King.”

Emma could see his profile: It was beautiful. Clear, precise, clean like a drawing or painting of something perfect. Emma couldn’t have described the shape of his eyes or cheekbones or the turn of his mouth, and she lacked Jules’s ability to paint it, but she knew it was uncanny and wonderful and that she would remember the face of the King of the Unseelie Court for all her life.

He turned, bringing his face into full view. Emma heard Cristina gasp faintly. The King’s face was divided down the middle. The right side was the face of a young man, luminous with elegance and beauty, though his eye was red as flame. The left side was an inhuman mask, gray skin tight and leathery over bone, eye socket empty and black, mottled with brutal scars.

Kieran, bound to the tree, looked once at the monstrous face of his father and turned his head away, his chin dropping, tangled black hair falling to hide his eyes. Erec hurried toward the pavilion, joining Adaon and a crowd of other princes at their father’s side.

Mark was breathing hard. “The face of the Unseelie King,” he whispered. “Kieran spoke of it, but . . .”

“Steady,” Julian whispered back. “Wait to hear what he says.”

As if on cue, the King spoke. “Folk of the Court,” he said. “We have gathered here for a sad purpose: to witness justice brought against one of the Fair Folk who has taken up arms and murdered another in a place of peace. Kieran Hunter stands convicted of the murder of Iarlath of the Unseelie Court, one of my own knights. He slew him with his blade, here in the Unseelie Lands.”

A murmur ran through the crowd.

“We pay a price for the peace among our folk,” said the King. His voice was like a ringing bell, lovely and echoing. Something touched Emma’s shoulder. It was Julian’s hand, the one that wasn’t clasping Mark’s arm. Emma looked at him in surprise, but he was staring ahead, toward the clearing. “No Unseelie faerie shall raise hand against another. The price of disobedience is justice. Death is paid with death.”

Julian’s fingers moved quickly against Emma’s skin through her shirt, the age-old language of their shared childhood. S-T-A-Y H-E-R-E.

She whipped around to look at him, but he was already moving. She heard Mark’s breath hiss out in a gasp and caught at his wrist, preventing him from going after his brother.

Under the starlight, Julian walked out into the clearing full of Unseelie gentry. Emma, her heart pounding, held tight to Mark’s wrist; everything in her wanted to rush out after her parabatai, but he had asked her to stay, and she would stay, and hold on to Mark. Because Julian was moving as if he had a plan, and if he had a plan, she owed it to him to trust that it might work.

“What is he doing?” Cristina moaned, in an agony of suspense. Emma could only shake her head. Some of the faeries on the edge of the crowd had spotted him now and were gasping, drawing back as he approached. He had done nothing to cover the black, permanent runes on his skin—the Voyance rune on the back of his hand glared like an eye at the Fair Folk in their gaudy finery. The woman in the dress made of bones gave a screech.

“Shadowhunter!” she cried.

The King sat bolt upright. A moment later a row of faerie knights in black-and-silver armor—among them the princes who had dragged Kieran to the tree—had surrounded Julian, forming a circle around him. Swords of silver and brass and gold flashed up around him like a grim tribute.

Kieran raised his head and stared. The shock on his face as he recognized Julian was complete.

The King rose. His bifurcated face was grim and terrible. “Bring the Shadowhunter spy to me that I may kill him with my own hand.”

“You will not kill me.” Julian’s voice, calm and confident, rose above the din of voices. “I am no spy. The Clave sent me, and if you kill me, it will mean open war.”

The King hesitated. Emma felt a wild half urge to laugh. Julian had spoken the lie so calmly and confidently that she almost believed it herself. Doubt flickered across the King’s face.

My parabatai, she thought, looking at Jules, standing with his back straight and his head back, the only seventeen-year-old boy in the world who could make the King of the Dark Court doubt himself.

“The Clave sent you? Why not an official convoy?” said the King.

Julian nodded, as if he’d expected the question. Probably he had. “There was no time. When we heard of the threat to Kieran Hunter, we knew we had to move immediately.”

Kieran made a choked sound. There was a lash of thorned wire around his throat. Blood trickled down onto his collarbone.

“What cares the Clave or Consul for the life of a boy from the Wild Hunt?” said the King. “And a criminal, at that?”

“He is your own son,” said Julian.

The King smiled. It was a bizarre sight, as half his face sprang into light and the other displayed a ghastly grimace. “No one can then,” he said, “accuse me of favoritism. The Unseelie Court extends the hand of justice.”

“The man he murdered,” said Julian. “Iarlath. He was a kin-slayer. He plotted with Malcolm Fade to murder others of the Fair Folk.”

“They were of the Seelie Court,” said the King. “Not of our people.”

“But you say you are the ruler of both Courts,” said Julian. “Should not then the people who will one day be yours to rule expect your fairness and clemency?”

There was a murmur in the crowd, this one softer in tone. The King frowned.

“Iarlath also murdered Nephilim,” said Julian. “Kieran prevented other Shadowhunter lives from being lost. Therefore we owe him, and we pay our debts. We will not let you take his life.”

“What can you do to stop us?” snapped Erec. “Alone, as you are?”

Julian smiled. Though Emma had known him all her life, though he was like another part of herself, the cold surety of that smile sent ice through her veins. “I am not alone.”

Emma let go of Mark. He strode forward into the clearing without looking back, and Emma and Cristina came after. None of them drew their weapons, though Cortana was strapped to Emma’s back, visible to everyone. The crowd parted to let them pass through and join Julian. Emma realized, as they stepped into the circle of guards, that Mark’s feet were still bare. They looked pale as a white cat’s paws against the long dark grass.

Not that it mattered. Mark was a formidable warrior even barefoot. Emma had good cause to know.

The King looked at them and smiled. Emma didn’t like the look of that smile. “What is this?” he said. “A convoy of children?”