“We can help with that,” said Catarina. “Can’t we, Malcolm?”

“Hmm?” Malcolm was idly wandering around the station, stopping to stare at things Maia thought of as everyday—a banister railing, a cracked tile in the wall, a pane of window glass—as if they were revelatory. The pack watched him in puzzlement.

Catarina sighed. “Don’t mind him,” she said to Maia in an undertone. “He’s quite powerful, but something happened to him at the beginning of last century, and he’s never been quite right since. He’s pretty harmless.”

“Help? Of course we can help,” Malcolm said, turning around to face them. “You need to get a message through? There’s always carrier kittens.”

“You mean pigeons,” said Bat. “Carrier pigeons.”

Malcolm shook his head. “Carrier kittens. They’re so cute, no one can deny them. Fix your mouse problem, too.”

“We don’t have a mouse problem,” said Maia. “We have a megalomaniac problem.” She looked at Catarina. “Sebastian’s determined to drive wedges between Downworlders and Shadowhunters. Kidnapping the representatives, attacking the Praetor, he won’t stop there. All of Downworld will know soon enough what’s going on. The question is, where will they stand?”

“We will stand bravely with you!” Malcolm announced. Catarina looked darkly at him, and he quailed. “Well, we will stand bravely near you. Or at least within earshot.”

Maia gave him a hard look. “So no guarantees, basically?”

Malcolm shrugged. “Warlocks are independent. And hard to get hold of. Like cats, but with fewer tails. Well, there are some tails. I don’t have one myself—”

“Malcolm,” said Catarina.

“The thing is,” Maia said, “either the Shadowhunters win or Sebastian does, and if he does, he’ll come for us, for all Downworlders. All he wants is to turn this world into a wasteland of ashes and bone. None of us will survive.”

Malcolm looked faintly alarmed, though not anywhere near as alarmed, Maia thought, as he ought to. His overwhelming aspect was one of innocent, childlike glee; he had none of Magnus’s wise mischief. She wondered how old he was.

“I don’t think we can get into Idris to fight beside them, like we did before,” Maia went on. “But we can try to get the word out. Reach other Downworlders before Sebastian does. He’ll try to recruit them; we have to make them understand what joining up with him will mean.”

“The destruction of this world,” said Bat.

“There are High Warlocks in various cities; they’ll probably consider the issue. But we’re loners, like Malcolm said,” replied Catarina. “The Fair Folk are unlikely to talk to any of us; they never do—”

“And who cares what the vampires do?” snapped Leila. “They turn on their own, anyway.”

“No,” said Maia after a moment. “No, they can be loyal. We need to meet with them. It’s high time the leaders of the New York pack and vampire clan formed an alliance.”

A shocked murmur ran around the room. Werewolves and vampires didn’t parley unless brought together by a larger outside force, like the Clave.

She reached her hand out to Bat. “Pen and paper,” she said, and he gave it to her. She scrawled a quick note, tore off a sheet of paper, and handed it to one of the younger wolf pups. “Take this to Lily at the Dumort,” she said. “Tell her I want to meet with Maureen Brown. She can pick a neutral location; we’ll approve it before the meeting. Tell them it should be as soon as possible. The lives of both our representative and theirs might depend on it.”

“I want to be mad at you,” Clary said. They were making their way down the snaking tunnel; Jace was holding her witchlight, its illumination guiding them. She was reminded of the first time he had pressed one of the smooth carved stones into her hand. Every Shadowhunter should have their own witchlight rune-stone.

“Oh?” Jace said, casting a wary glance at her. The ground under their feet was polished smooth, and the walls of the corridor curved inward gracefully. Every few feet a new rune was carved into the stone. “What for?”

“Risking your life,” she said. “Except you didn’t, really. You were just standing there and the demon grabbed you. Admittedly, you were being obnoxious to Simon.”

“If a demon grabbed me every time I was obnoxious to Simon, I’d have died the day you met me.”

“I just . . .” She shook her head. Her vision was blurring with exhaustion, and her chest ached with longing for her mother, for Luke. For home. “I don’t know how I got here.”

“I could probably retrace our steps,” Jace said. “Straight through the faerie corridor, left at the decimated village, right at the blasted plain of the damned, sharp U-turn at the heap of dead demon—”

“You know what I mean. I don’t know how I got here. My life was ordinary. I was ordinary—”

“You’ve never been ordinary,” Jace said, his voice very quiet. Clary wondered if she’d ever stop being dizzied by his sudden transformations from humor to seriousness and back again.

“I wanted to be. I wanted to have a normal life.” She glanced down at herself, dusty boots and stained gear, her weapons glittering at her belt. “Go to art school.”

“Marry Simon? Have six kids?” There was a slight edge to Jace’s voice now. The corridor made a sharp right turn, and he disappeared around it. Clary quickened her step to catch up with him—

And gasped. They had come out of the tunnel into an enormous cavern, half-filled with an underground lake. The cavern stretched out into the shadows. It was beautiful, the first beautiful thing Clary had seen since they’d entered the demon realm. The roof of the cave was folded stone, formed by years of trickling water, and it glowed with the intense blue shimmer of bioluminescent moss. The water below was just as blue, a deep glowing twilight, with pillars of quartz jutting up here and there like rods of crystal.

The path opened out into a shallow beach of fine, very powdery sand, nearly as soft as ash, that led down to the water. Jace moved down the beach and crouched by the water, thrusting his hands into it. Clary came up behind him, her boots sending up puffs of sand, and knelt down as he splashed water over his face and neck, scrubbing at the stains of black ichor.

“Be careful—” She caught at his arm. “The water could be poisonous.”

He shook his head. “It’s not. Look under the surface.”

The lake was clear, glassine. The bottom was smooth stone, carved all over with runes that emitted a faint glow. They were runes that spoke of purity, healing, and protection.

“I’m sorry,” Jace said, snapping her out of her reverie. His hair was wet, plastered to the sharp curves of his cheekbones and temples. “I shouldn’t have said that about Simon.”

Clary put her hands into the water. Small ripples spread from the movement of her fingers. “You have to know I wouldn’t wish for a different life,” she said. “This life brought me you.” She cupped her hands, bringing the water to her mouth. It was cold and sweet, reviving her flagging energy.

He gave her one of his real smiles, not just a quirk of the mouth. “Hopefully not just me.”