The office was sparsely decorated. On the desk was a photograph of a tall man with his arm around a small girl who resembled Diana despite her youth. They stood in front of a shop whose sign read DIANA’S ARROW.

There were flowers on the windowsill that Diana had placed there to brighten the room. She folded her arms across the top of the desk and looked at Emma levelly.

“You lied to me last night,” she said.

“I didn’t,” Emma said, “not exactly. I—”

“Don’t say you omitted, Emma,” said Diana. “You know better than that.”

“What did Johnny Rook tell you?” Emma said, and was immediately sorry she’d said it. Diana’s expression darkened.

“Why don’t you tell me?” she said. “In fact, tell me what you did and what your punishment should be. Does that seem fair?”

Emma crossed her arms defiantly over her chest. She hated being caught, and Diana was good at catching her. Diana was smart, which was often awesome, but not when she was angry.

Emma could either fill in for Diana what she thought Diana was angry about, thus possibly revealing more than Diana already knew, or she could stay silent, thus possibly annoying Diana further. After a moment’s deliberation, she said, “I should have to take care of a box of kittens. You know how cruel kittens are, with their tiny little claws and terrible attitudes.”

“Speaking of terrible attitudes,” Diana said. She was idly playing with a pencil. “You went to the Shadow Market, against specific rules. You talked to Johnny Rook. He tipped you off that there’d be a body dump at the Sepulchre that might be connected to your parents’ deaths. You didn’t just happen to be there. You weren’t patrolling.”

“I paid Rook not to say anything,” Emma muttered. “I trusted him!”

Diana threw her pencil down. “Emma, the guy is known as Rook the Crook. In fact, he’s not just a crook, he’s on the Clave’s watch list because he works with faeries without permission. Any Downworlder or mundane who works in secret with faeries is locked out of business with Shadowhunters and forfeits their protection; you know that.”

Emma threw up her hands. “But those are some of the most useful people out there! Cutting them off isn’t helping the Clave, it’s punishing Shadowhunters!”

Diana shook her head. “The rules are the rules for a reason. Being a Shadowhunter, a good one, is about more than just training fourteen hours a day and knowing sixty-five ways of killing a man with salad tongs.”

“Sixty-seven,” Emma said automatically. “Diana, I’m sorry. I really am, especially for dragging Cristina into this. It’s not her fault.”

“Oh, I know that.” Diana was still frowning. Emma plunged ahead.

“Last night,” she said, “you told me you believed me. About Sebastian not killing my parents. About there being more to it. Their deaths weren’t just—just Sebastian wiping out the Conclave. Someone wanted them dead. Their deaths meant something—”

“Everyone’s death means something,” Diana said in a clipped tone. She passed a hand across her eyes. “I talked to the Silent Brothers last night. I found out what they know. And God, I’ve been telling myself I ought to lie to you about it—I’ve been struggling with it all day—”

“Please,” Emma whispered. “Please, don’t lie.”

“But I can’t. I remember when I came here, and you were this little girl, you were twelve years old, and you were wrecked. You’d lost everything. All you had to hang on to was Julian and your need for revenge. For Sebastian not to have been the reason your parents died, because if he was, then how could you punish him?” She took a deep breath. “I know Johnny Rook told you there’ve been a rash of murders. He’s right. Twelve total, counting the one last night. No trace of the murderer left behind. All of the victims unidentified. Their teeth broken, wallets missing, fingerprints sanded off.”

“And the Silent Brothers didn’t know about this? The Clave, the Council—?”

“They did know. And this is the part you’re not going to like.” Diana’s fingernails tapped on the glass of her desk. “Several of the dead were Fair Folk. That makes this a matter for the Scholomance, the Centurions, and the Silent Brothers. Not for Institutes. The Silent Brothers knew. The Clave knew. They didn’t tell us, deliberately, because they don’t want us involved.”

“The Scholomance?”

The Scholomance was a piece of Shadowhunter history come to life. A cold castle of towers and corridors carved into the side of a mountain in the Carpathians, it had existed for centuries as a place where the most elite of Shadowhunters were trained to deal with the double menaces of demons and Downworlders. It had been closed when the first Accords were signed: a show of faith that Downworlders and Shadowhunters were no longer at war.

Now with the advent of the Cold Peace, it had been reopened and was operational again. One had to pass a series of harsh tests to be admitted, and what was learned at the school was not to be shared with others. Those who graduated were called Centurions, scholars and legendary warriors; Emma had never met one in person.

“It might not be fair, but it’s the truth.”

“But the markings. They admitted they were the same markings that were on my parents’ bodies?”