“Exactly,” said Kieran. “Mark has broken the law of Faerie, and for that, he must return to Faerie with us and tarry no longer in the human world.”

“No,” said Iarlath. “That is not the punishment.”

“What?” Kieran turned to him, puzzled. His hair flared at the edges with blue and white like hoarfrost. “But you said—”

“I said nothing to you of punishments, princeling,” said Iarlath, stepping forward. “You told me of Mark Blackthorn’s actions and I said they would be duly dealt with. If you believed that meant he would be dragged back to Faerie to be your companion, then perhaps you should remember that the security of the gentry of Faerie is more paramount than the fancies of a son of the Unseelie King.” He looked hard at Mark, his eyes eerie in the bright sunlight. “The King has given me leave to choose your punishment,” he said. “It will be twenty whip-lashes across the back, and count yourself lucky it is not more.”

“NO!” The word was like an explosion. To Emma’s surprise it was Julian—Julian, who never raised his voice. Julian, who never shouted. He started down the steps; Emma followed him, Cortana ready in her hand.

Kieran and Mark were silent, looking at each other. The rest of the blood had left Kieran’s face and he looked sick. He didn’t move as Julian stepped forward, blocking Kieran’s view of Mark.

“If any of you touch my brother to harm him,” Julian said, “I will kill you.”

Gwyn shook his head. “Do not think I do not admire your spirit, Blackthorn,” he said. “But I would think twice before moving to harm a convoy of Faerie.”

“Move to prevent this, and our agreement will be at an end,” said Iarlath. “The investigation will stop, and we will take Mark back with us to Faerie. And he will be whipped there, and worse than any whipping he could receive here. You will win nothing and lose much.”

Julian’s hands tightened into fists. “You think you alone understand honor? You who cannot understand what we might lose by standing here and letting you humiliate and torture Mark? This is why faeries are despised—this senseless cruelty.”

“Careful, boy,” rumbled Gwyn. “You have your Laws and we have ours. The difference is only that we do not pretend ours are not cruel.”

“The Law is hard,” said Iarlath with amusement, “but it is the Law.”

Mark spoke for the first time since Iarlath had pronounced his sentence. “A bad law is no law,” he said. He looked dazed. Emma thought of the boy who had collapsed in the Sanctuary, who had screamed when he was touched and spoken of beatings that still clearly terrified him. She felt as if her heart was being ripped out—to whip Mark, of all people? Mark, whose body might heal but whose soul would never recover?

“You came to us,” Julian said. There was desperation in his voice. “You came to us—you made a bargain with us. You needed our help. We have put everything on the line, risked everything, to solve this. Fine, Mark made a mistake, but this loyalty test is misplaced.”

“It is not about loyalty,” said Iarlath. “It is about setting an example. These are the laws. This is how it works. If we let Mark betray us, others will learn we are weak.” His look was pleased. Greedy. “The bargain is important. But this is more important.”

Mark moved forward then, catching at Julian’s shoulder. “You can’t change it, little brother,” he said. “Let it happen.” He looked at Iarlath, and then at Gwyn. He didn’t look at Kieran. “I will take the punishment.”

Emma heard Iarlath laugh. It was a cold, sharp sound like cracking icicles. He reached into his cloak and pulled out a handful of blood-red stones. He threw them to the ground. Mark, clearly familiar with what Iarlath was doing, blanched.

At the spot on the ground where Iarlath had thrown his stones, something had begun to grow. A tree, bent and gnarled and twisted, its bark and leaves the color of blood. Mark watched it in horrified fascination. Kieran looked as if he was going to throw up.

“Jules,” Emma whispered. It was the first time she had called him that since the night on the beach.

Julian stared blindly at Emma for a moment before turning and lurching the rest of the way down the steps. After a frozen moment Emma followed him. Iarlath moved immediately to block her way.

“Put your sword away,” he snarled. “No weapons in the presence of the Fair Folk. We know well you cannot be trusted with them.”

Emma whipped Cortana up so fast that the blade was a blur. The tip of it sailed beneath Iarlath’s chin, a millimeter from his skin, describing the arc of a deadly smile. He made a noise in his throat even as she slammed the sword into the sheath on her back with enough force to be audible. She stared at him, eyes blazing with rage.

Gwyn chuckled. “And here I thought all the Carstairs were good for was music.”

Iarlath gave Emma a filthy look before whirling away and stalking toward Mark. He had begun unwinding a coil of rope from where it was tied at his waist. “Put your hands on the trunk of the quickbeam,” he said. Emma assumed he meant the dark, twisted tree with its sharp branches and blood-colored leaves.

“No.” Kieran, sounding desperate, whirled fluidly toward Iarlath. He dropped to the ground, kneeling, his hands outstretched. “I beg you,” he said. “As a prince of the Unseelie Court, I beg you. Do not hurt Mark. Do what you will with me, instead.”

Iarlath snorted. “Whipping you would incur your father’s wrath. This will not. Get to your feet, child-prince. Do not shame yourself further.”

Kieran staggered upright. “Please,” he said, looking not at Iarlath, but at Mark.

Mark gave him a look full of so much searing hate Emma nearly recoiled. Kieran looked, if possible, even sicker.

“You should have forseen this, whelp,” said Iarlath, but his gaze wasn’t on Kieran—it was on Mark, hungry, full of appetite, as if the thought of a whipping drew him like the thought of food. Mark reached out toward the tree—

Julian stepped forward. “Whip me instead,” he said.

For a moment everyone froze. Emma felt as if a baseball bat had slammed into her chest. “No,” she tried to say, but the word wouldn’t come.

Mark whirled around to face his brother. “You can’t,” he said. “Mine is the crime. Mine must be the punishment.”

Julian stepped past Mark, almost pushing him aside in his determination to present himself in front of Gwyn. He stood with his back straight and chin up. “In a faerie battle, one can pick a champion to represent them,” he said. “If I could stand in for my brother in a fight, why not now?”

“Because I’m the one who broke the law!” Mark looked desperate.

“My brother was taken at the beginning of the Dark War,” Julian said. “He never fought in the battle. His hands are clean of faerie blood. Whereas I was in Alicante. I killed Fair Folk.”

“He’s goading you,” Mark said. “He doesn’t mean it—”

“I do mean it,” said Julian. “It is the truth.”

“If someone volunteers to take the place of a condemned man, we cannot gainsay it.” Gwyn’s look was troubled. “Are you sure, Julian Blackthorn? This is not your punishment to take.”