“You had Jaime,” she said in a hard voice.

“No one has Jaime,” he said. “You think he didn’t panic when you left? The two of you were supposed to be parabatai.”

“I think he’ll live.” Cristina could hear her own voice, cold and small; it seemed to have frozen down to a tiny sliver of ice.

He was silent for a moment. “Reports were coming through to the Scholomance from L.A.,” he said. “Flares of necromantic magic. Your friend Emma’s efforts to investigate the deaths of her parents. The Clave thought she was making a fuss about nothing, that it was clear Sebastian had killed her parents but she wouldn’t accept it. I thought she might be right, though. I came out here to look into it, and my first day, I went to the Shadow Market. Look, it’s a long story—I found my way to Wells’s house—”

“Where you decided it was a good idea to shoot a fellow Nephilim with a crossbow?”

“I didn’t know they were Shadowhunters! I thought they were murderers— I wasn’t shooting to kill—”

“No manches,” Cristina said bluntly. “You should have stayed and told them you were Nephilim. Those arrows were poisoned. Julian nearly died.”

“I gathered that.” Diego looked rueful. “The arrows weren’t poisoned by me. If I’d had any idea, I would have stayed. The weapons I bought at the Shadow Market must have been tainted without my knowing.”

“Well, what were you doing buying weapons there anyway? Why didn’t you come to the Institute?” Cristina demanded.

“I did,” Diego said, flattening her with surprise. “I came looking for Arthur Blackthorn. I found him in the Sanctuary. I tried to tell him who I was, why I was here. He told me the damnation of the Blackthorns was their own private business, that they didn’t want any interference, and that if I knew what was good for me I’d get out of town before everything burned.”

“He said that?” Cristina sat up in astonishment.

“I realized I wasn’t welcome here. I thought, even, that the Blackthorns might be involved in the necromancy somehow.”

“They would never—!”

“Well, you can say that. You know them. I didn’t know them. All I knew was that the head of the Institute had told me to go away, but I couldn’t because you were here. Maybe in danger, maybe even in danger from the Blackthorns. I had to get weapons at the Market because I was afraid that if I went to any of the usual weapons caches it would be found out that I was still here. Look, Cristina, I am not a liar—”

“You don’t lie?” Cristina demanded. “You want to know why I left home, Diego? In May we were in San Miguel de Allende. I’d gone to the Jardín, and when I came back, you and Jaime were sitting up on the terrace. I was coming through the courtyard; I could hear your voices very clearly. You didn’t know I was there.”

Diego looked puzzled. “I don’t . . .”

“I heard him talking to you about how the wrong branch of the Rosales family was in power. It should have been you. He was talking about the plan he had. Surely you remember. The one where you would marry me, and he would become my parabatai, and together you would use your influence over me and my mother to eject her from her position as head of the D.F. Institute, and then you would take over. He said you had the easy job, marrying me, because you could leave me someday. Becoming parabatai means you’re stuck with them forever. I remember him saying that.”

“Cristina . . .” Diego had gone pale. “That’s why you left that night. It wasn’t because your mother was sick and needed you at the Institute in the city.”

“I was the one who was sick,” Cristina spat. “You broke my heart, Diego, you and your brother. I don’t know what’s worse, losing your best friend or losing the boy you’re in love with, but I can tell you that it was like you both died for me that day. That’s why I don’t pick up your calls or messages. You don’t take calls from a dead boy.”

“And what about Jaime?” Something flared in his eyes. “What about his calls?”

“He never has called,” said Cristina, and almost took pleasure in the look of shock on his face. “Maybe he has better sense than you.”

“Jaime? Jaime?” Diego was on his feet now. A vein in his temple throbbed. “I remember that day, Cristina. Jaime was drunk and he was babbling. Did you hear me say anything or did you only hear him?”

Cristina forced herself to think back. In memory it seemed like a cacophony of voices. But . . . “I only heard Jaime,” she said. “I didn’t hear you say a word. Not to defend me. Not to say anything.”

“There was no point talking to Jaime when he was like that,” Diego said bitterly. “I let him talk. I shouldn’t have. I had no interest in his plan. I loved you. I wanted to go far away with you. He is my brother, but he is— He was born with something missing, I think, some piece of his heart where compassion lives.”

“He was going to be my parabatai,” said Cristina. “I was going to be tied to him forever. And you weren’t going to say anything to me? Do anything to stop it?”

“I was,” Diego protested. “Jaime had planned to go to Idris. I was waiting for him to leave. I needed to speak to you when he wasn’t there.”