“It seems somehow blasphemous to use Marks to rid oneself of the effects of alcohol,” Matthew added, as Thomas put his stele away. The Mark in question gleamed, new-made, on Matthew’s wrist. He looked already more clear-eyed, and less as if he were about to fall asleep or be sick.

“I’ve seen you use your stele to part your hair,” said James dryly, as he began to examine the window locks.

“The Angel gave me this hair,” replied Matthew. “It’s one of the Shadowhunters’ gifts. Like the Mortal Sword.”

“Now that is blasphemy,” said Thomas. Christopher had joined James in checking the window fastenings, though James desperately wished he could open one and get some air into the room.

“A thing of beauty is a joy forever, Thomas,” said Matthew. “James, why are we locking all the windows? Are we afraid of overcurious pigeons?”

James slammed a bolt home and turned to look at the others. “I have spent the past four years of my life trying to train myself not to do what I’m about to do. I don’t wish to even consider the possibility of being interrupted.”

“By a pigeon?” said Matthew, but the look in his eyes was sympathetic, despite his lightly mocking words. “Jamie, what are we doing here?”

James took a deep breath. “I am going to deliberately send myself into the shadow realm,” he said.

The Merry Thieves exploded in a chorus of protest. Matthew stood up, his eyes glittering. “Certainly not,” he said. “The danger—”

“I do not think there will be danger,” said James. “I have been in and out of the shadow realm many times in my life. It has been ages since I fell accidentally into that world. Yet in the past week, I have seen it three times, once just before the attack today. I cannot think that is a coincidence. If I can use this ability to help Barbara, Ariadne, all of us—you must let me do it.”

“Bloody hell.” Matthew rubbed at his eyes. “If we don’t help you here, you’ll just try to do this after we’re all gone, won’t you?”

“Clearly,” said James. He tapped the daggers at his waist. “I’m armed, at least.”

Matthew twisted the signet ring on his finger, marked with MF. It had been a gift from James when they had become parabatai, and he tended to fiddle with it only when distressed. “Very well, James. As you wish.”

James cleared his throat. “All right. Let’s get on with it.”

He was met with the gaze of six expectant eyes.

“Well?” Thomas said hopefully, after a long pause. “Go on into the shadow realm, then.”