“Madame Fantomas,” Bessette said, his voice a whisper. But his eyes shifted. Quin noted the twitch, calculated the probabilities, and moved to the side just as Bessette attempted to knee him in the groin.

“Where will I find Madame?” Behind him, Lucy was barking again.

“Catacombs,” Bessette gasped. Then he crumpled. Quin let go of the scarf, allowing him to fall to his knees, but he kept his weapon trained on the man’s head.

“Madame Fantomas put her in the catacombs.” Bessette’s shoulder moved, just a twitch. The fool was planning another attack. One swift and well-aimed kick with Quin’s boot and the man rolled on the ground instead, hands between his legs, sobbing with a high-pitched squeal.

“Where are the catacombs?” Quin demanded. He scooped up Bessette’s pistol to empty the chamber. Then he froze, realizing he smelled smoke.

He spun around to find that thick smoke was billowing out of the small windows flush with the ground. No wonder Lucy had been barking—something was on fire.

Damn it, he didn’t have time for this; he had to find the catacombs. But Bessette had scurried into the woods the moment he’d turned his back. Quin briefly considered giving chase, but he was likely needed to help with the fire. The drunken captain certainly didn’t seem capable, if indeed he had made it out of bed.

He ran around the side of the building, ducking to avoid the cloud of black smoke pouring from the windows. It had an acrid, deeply unpleasant odor, as if putrid water had caught on fire.

Lucy raced ahead of him, and the sight of her brought an idea to mind so terrible that he almost stumbled. It couldn’t be that Lucy had been barking at Olivia—which would mean that the catacombs were below the garrison?

He burst into the courtyard to find it full of soldiers darting here and there chaotically. No one seemed to be making a concerted effort to put out the fire. The captain was standing at the top of the steps, bellowing and waving his arms. His men were trotting out the front door carrying out crates that clinked gently. It seemed the brandy took first priority.

A hand caught Quin’s arm. “Sir, sir!”

He turned. A young and very frightened soldier stood before him, face blackened with soot.

“She’s in there,” the boy panted. “Past the kitchens. She was supposed to come out when I got Madame to leave her kitchen—she had the key!—but she hasn’t come, and I couldn’t get through the smoke.”

The boy was pointing, hand shaking, to a doorway from which smoke billowed like a sheet in the wind. “The catacombs,” he gasped. “She’s in the catacombs and there’s no other exit!”

Quin looked in time to see Lucy race under the smoke and disappear through the door.

A curse ripped from his lips as he pulled off his coat and jerked sharply on his linen shirtsleeve, tearing it off. “Ignore that bloody captain and his brandy,” he shouted at the boy. “You must put out the fire! Organize the men.”

Without waiting for a response, he tied the sleeve around his nose and mouth and lunged down the steps, bent double to avoid the thickest smoke. Olivia. Olivia, Olivia, Olivia. It felt as if the very beat of his heart was sending her name coursing through his body.

At the bottom of the stairs he squinted, able to see just enough to realize that he was in a kitchen. Past the kitchen, the boy had said. He saw smoke pouring from a chimney on fire, likely feeding on years of grease. He couldn’t see a door, but he heard Lucy bark somewhere to his right. He moved in that direction, half-blind and choking, toward the bark.

If anything, the smoke was worse in the passage he found. He shouted Olivia’s name, took in a lungful of smoke, reeled, and nearly fell. He flattened himself on the pavement, turning his head so his cheek was against the cool stone, and was rewarded with a gulp of relatively clean air. Holding his breath, he thrust up and forward, flattened himself again, took another breath. By now, he’d inhaled enough smoke that it felt as if the fire was in his lungs, not the chimney.

But Olivia was here, somewhere. Five years before, he had not entered the Channel’s frigid, treacherous waters to save Alfie. He could not have saved Alfie. But he could make it down this bloody passage. He would not allow another person he loved to die gasping for air.

Another gulp of air and he heaved himself forward again, trying, against his body’s protests, to think. He had to find Olivia and get her to one of those windows. They were tiny, too small to push her through, but if he could hoist her up to the window on his shoulders, she would be able to breathe. Air on the ground was damnably short, even with his nose pressed against the stones. In fact, the relentlessly calculating part of his brain informed him that he would die in minutes if he did not breathe some fresh air.

Another breath. The bleak truth of it came with tingling in his extremities. He would not survive this. He would not find Olivia, nor save her. His lungs burned, telling their own story.

Still, at least this time he knew that he had given it his all: he hadn’t stood, powerless, on the dock. He had thrown himself into the water.

He forced himself to crawl forward again, and then he heard a strangled woof. He reached out, thinking he’d touch fur, and felt a bare arm instead. A limp arm.

A window. He had to get her to a window. Indeed, he had to get them both to a window. He felt up her arm, panting her name, but had to stop in order to dip his head to the stone floor once again. He sucked up what air he could, choked, tried again. Olivia was lying facedown, which might have saved her.

He refused to think about the other possibility.

She lay halfway across a threshold. He tried to peer into the room, but oily black smoke obscured everything. But Lucy had barked at a window . . . without further thought Quin took another breath, then he staggered up and hauled Olivia’s slack form into the room. His body overruled him in a desperate attempt to find air. Dropping Olivia, he sucked in a gulp of smoke and doubled over, coughing so hard that he felt as if his ribs would break.

Black dots floated before his eyes, and he stumbled forward, hitting some sort of soft pallet. He leaned against it for a second, trying to gather strength. He knew the window was up there; if he could hoist Olivia onto this thing, he could put her face close to it.

They would have to abandon the little air there was at ground level. But the logical part of his brain registered that his loss of vision wasn’t only due to the smoke. His sight was closing down along with his lungs. They would not survive unless they got to that window.

He crouched down, took in a breath, managed to roll Olivia’s limp body over his shoulder, and staggered to his feet. It was a sign of his diminished mental power that he felt no surprise when a ladder appeared just where he needed it. He put a foot on the lowest rung.

Lucy. He propped Olivia against the ladder, reached down and felt fur, picked up the dog by the scruff of her neck.

The black dots were swirling now, like a storm coming in at sea. How much time did he have before unconsciousness? A minute? Less? He snatched Olivia’s skirt, dropped Lucy into it, and stuffed the fold of cloth into his mouth, holding the dog between them.

He forced his second foot onto the ladder. His thighs felt like steel bars, inflexible and impossibly heavy. But he pushed himself up and up again, until at last he toppled Olivia on top of the pallet. There was the window. Bless you, Lucy, he thought.