Jem drew his blade back, letting out a breath, satisfaction mixed with relief. “I knew it—”
The coachman snarled. His hand darted into his coat and withdrew a long serrated knife, the kind butchers used to cut through bone, while the woman, snapping into action, moved toward Tessa, her ungloved hands outstretched. Their movements were jerky, uneven—but very, very fast, much faster than Tessa would have guessed they could move. The coachman’s companion advanced on Tessa, her face expressionless, her mouth half-open. Something metallic gleamed inside it—metal, or copper. She has no gullet, and I would guess, no stomach. Her mouth ends in a sheet of metal behind her teeth.
Tessa retreated until her back hit the parapet. She looked for Jem, but the coachman was advancing on him again. Jem slashed away at him with the blade, but it seemed only to slow the man down. The coachman’s coat and shirt hung away from his body now in ragged strips, clearly showing the metal carapace beneath.
The woman grabbed for Tessa, who darted aside. The woman lumbered forward and crashed into the parapet. She seemed to feel no more pain than the coachman did; she drew herself stiffly upright and turned to move toward Tessa again. The impact seemed to have damaged her left arm, though, for it hung bent at her side. She swung toward Tessa with her right arm, fingers grasping, and seized her by the wrist. Her grip was tight enough to make Tessa scream as the small bones in her wrist flared with pain. She clawed at the hand that held her, her fingers sinking deep into slick, soft skin. It peeled away like the skin of a fruit, Tessa’s nails scraping against the metal beneath with a harshness that sent shivers up her spine.
She tried to jerk her hand back, but she only succeeded in pulling the woman toward her; she was making a whirring, clicking noise in her throat that sounded unpleasantly insectile, and up close her eyes were pupil-less and black. Tessa pulled her foot back to kick out—
And there was the sudden clang of metal on metal; Jem’s blade flashed down with a clean slice, cutting the woman’s arm in half at the elbow. Tessa, released, fell back, the bodiless hand falling from her wrist, striking the ground at her feet; the woman was jerking around toward Jem, whir-click, whir-click. He moved forward, striking at the woman hard with the flat of the cane, knocking her back a step, and then another and another until she hit the railing of the bridge so hard that she overbalanced. Without a cry she fell, plunging toward the water below; Tessa raced to the railing just in time to see her slip beneath the surface. No bubbles rose to show where she had vanished.
Tessa spun back around. Jem was clutching his cane, breathing hard. Blood ran down the side of his face from a cut, but he seemed otherwise unharmed. He held his weapon loosely in one hand as he gazed at a dark humped shape on the ground at his feet, a shape that moved and jerked, flashes of metal showing between the ribbons of its torn clothing. When Tessa moved closer she saw that it was the body of the coachman, writhing and jerking. His head had been sliced cleanly away, and a dark oily substance pumped from the stump of his neck, staining the ground.
Jem reached up to push his sweat-dampened hair back, smearing the blood across his cheek. His hand shook. Hesitantly Tessa touched his arm. “Are you all right?”
His smile was faint. “I should be asking you that.” He shuddered slightly. “Those mechanical things, they unnerve me. They—” He broke off, staring past her.
At the south end of the bridge, moving toward them with sharp staccato motions, were at least a half dozen more of the clockwork creatures. Despite the jerkiness of their movements, they were approaching swiftly, almost hurtling forward. They were already a third of the way across the bridge.
With a sharp click the blade vanished back into Jem’s cane. He seized Tessa’s hand, his voice breathless. “Run.”
They ran, Tessa clutching his hand, glancing behind only once, in terror. The creatures had made it to the center of the bridge and were moving toward them, gathering speed. They were male, Tessa saw, dressed in the same kind of dark woolen coats and felt hats as the coachman had been. Their faces gleamed in the moonlight.
Jem and Tessa reached the steps at the end of the bridge, and Jem kept a tight grip on Tessa’s hand as they hurtled down the stairs. Her boots slipped on the damp stone, and he caught her, his cane clattering awkwardly against her back; she felt his chest rise and fall against hers, hard, as if he were gasping. But he couldn’t be out of breath, could he? He was a Shadowhunter. The Codex said they could run for miles. Jem pulled away, and she saw that his face was tight, as if he were in pain. She wanted to ask him if he’d been hurt, but there was no time. They could hear clattering footsteps on the stairs above them. Without a word Jem took hold of her wrist again and pulled her after him.
They passed the Embankment, lit by the glow of its dolphin lamps, before Jem turned aside and plunged between two buildings into a narrow alley. The alley sloped up, away from the river. The air between the buildings was dank and close, the cobblestones slick with filth. Washing flapped like ghosts from windows overhead. Tessa’s feet were screaming in their fashionable boots, her heart slamming against her chest, but there was no slowing down. She could hear the creatures behind them, hear the whir-click of their movements, closer and closer.
The alley opened out into a wide street, and there, rising up before them, was the looming edifice of the Institute. They dashed through the entrance, Jem releasing her as he whirled to slam and lock the gates behind them. The creatures reached them just as the bolts slid home; they crashed against the gate like windup toys unable to stop themselves, rattling the iron with a tremendous crash.
Tessa backed up, staring. The clockwork creatures were pressed up against the gates, their hands reaching through the gaps in the iron. She looked around wildly. Jem stood beside her. He was as white as paper, one hand pressed to his side. She reached for his hand, but he stepped back, out of her reach. “Tessa.” His voice was uneven. “Get into the Institute. You need to get inside.”
“Are you hurt? Jem, are you injured?”
“No.” His voice was muffled.
A rattle from the gate made Tessa look up. One of the clockwork men had his hand through a gap in the gate and was pulling at the iron chain that held it closed. As she stared in fascinated horror, she saw that he was dragging at the loops of metal with such force that the skin was peeling away from his fingers, showing the jointed metal hands beneath. There was obviously tremendous strength in those hands. The metal was warping and twisting in his grip; it was clearly a matter of minutes before the chain split and broke.
Tessa seized hold of Jem’s arm. His skin was burning hot to the touch; she could feel it through his clothes. “Come on.”
With a groan he let her pull him toward the front door of the church; he was staggering, and leaning on her heavily, his breath rattling in his chest. They lurched up the stairs, Jem sliding out of her grip almost the moment they reached the top step. He hit the ground on his knees, choking coughs ripping through him, his whole body spasming.
The gate burst open. The clockwork creatures spilled through into the drive, led by the one who had torn the chain apart, his skin-stripped hands gleaming in the moonlight.
Remembering what Will had said, that one had to have Shadowhunter blood to open the door, Tessa reached for the bellpull that hung beside it and yanked it, hard, but heard no sound. Desperate, she whirled back to Jem, still crouched on the ground. “Jem! Jem, please, you have to open the door—”