In the Lighthouse, Michael Fisher was having more than his share of problems. But worst of all was the smell.

It had gotten bad, really bad. A sour, armpitty reek of unwashed body and old socks. A moldy-cheese-and-onions sort of smell. The air was so rank that Michael could barely concentrate.

"Flyers, Elton, just get out of here, will you? You're stinking the whole place up."

The old man was sitting in his usual spot at the panel to Michael's right, his hands lying heavily on the arms of his old wheeled chair, face turned slightly to the side, away. After they'd powered up for the night-levels all green as far as that went; the station, whatever might have happened down there, was still sending current up the mountain-Michael had resumed work on the transmitter, which now lay in pieces on the counter, their images bulging through the articulated magnifying glass he'd carried out from the shed. He'd been nervously anticipating a visit from Sanjay, to ask him about the batteries; he was ready at a moment's notice to scoop the whole thing into a drawer. But the only official visit had come from Jimmy, late in the afternoon. Jimmy didn't look so hot, sort of flushed and out of it, like maybe he was coming down with something, and he'd asked about the batteries sheepishly, as if he'd forgotten all about them and was almost too embarrassed to bring it up now. He hadn't gotten farther than a meter from the door, though the smell would keep anyone away, a barricade of human stink, and had appeared to take no notice of the magnifier, sitting out there for anyone with half a brain to see, nor the open slot on the panel with its colored cables and exposed circuitry and the soldering iron resting beside it on the counter.

"I mean it, Elton. If you're going to sleep, go do it in back."

The old man twitched to life, fingers tightening on the arms of his chair. He turned his blind, rigid face to Michael.

"Right. Sorry." He rubbed a hand over his face. "Did you solder it?"

"I'm going to. Seriously, Elton. You're not alone in here. When was the last time you took a bath?"

The old man said nothing. Come to think of it, he didn't look so great himself, not that the standards where Elton was concerned were all that high to begin with. Sweaty and washed out and somehow not there. While Michael watched, Elton drifted a slow hand toward the surface of the counter, his fingers tapping lightly in a searching way until they alighted on the headphones, though he didn't pick them up.

"Are you feeling all right?"

"Hmmm?"

"I'm just saying you don't look so great is all."

"Are we lights up?"

"That was an hour ago. How asleep were you?"

Elton licked his lips with a heavy tongue. Flyers, what was it? Something in his teeth?

"Maybe you're right. Maybe I will go lie down."

The old man lumbered to his feet and shuffled down the narrow hallway that connected the work area with the back of the hut. Michael heard the creek of springs as his big body hit the cot.

Well, at least he wasn't in the room.

Michael turned his attention back to the work that lay before him. He'd been right about the thing in the girl's neck. The transmitter was connected to a memory chip, but not any kind he'd ever seen, much smaller and without any obvious ports except for a pair of tiny gold brads. One was linked to the transmitter, the other to the filigree of beaded wires. So either the wires were an antenna array and the transmitter ran off the chip, which didn't seem likely, or the wires themselves were sensors of some kind, the source of the data the chip was recording.

The only way to find out for sure was to read the data on the chip. And the only way to do that was to solder it hard to the mainframe's memory board.

It was a risk. Michael was hard-soldering a piece of unknown circuitry to the control panel itself. Maybe the system wouldn't see it. Maybe the system would crash and the lights would all go out. Probably the wisest course would be to wait until morning. But by this point he was moving forward on sheer momentum, his mind clamped onto the problem like a squirrel with a nut in his teeth; he couldn't have waited if he wanted to.

He'd have to take the mainframe off-line first. This meant shutting down the controllers to run straight off the batteries. You could do this for a while but not for long; without the system to monitor the current, any fluctuation could flip a breaker. So once the mainframe was off-line, he'd have to work fast.

He took a deep breath and called up the system menu.

Shut down?

He clicked on: Y The hard drive began to spin down. Michael darted from his chair and shot across the room to the breaker box.

None of the breakers moved.

He got quickly to work, pulling the motherboard free, placing it on the counter under the magnifier, taking up the hot iron in one hand and the strip of solder in the other. He touched it to the tip of the iron-a waft of smoke curling in the air above it-and watched as a single drop descended toward the open channel on the motherboard.

Bull's-eye.

He tweezered the chip; he had one shot to get this right. Gripping his right wrist to keep it steady, he gently lowered the chip's exposed contacts into the solder, freezing it in place for a count of ten while the bead of liquid solder cooled and stiffened around it.

Only then did he let himself breathe. He slid the board back into the panel, locked it in place, and booted the mainframe back up.

In the long minute that followed as the system came back online, the hard drive clicking and whirring, Michael Fisher closed his eyes and thought: Please.

And there it was. When he opened his eyes he saw it, sitting in the system directory. UNKNOWN DRIVE. He selected the image and watched as the window sprang open. Two partitions, A and B. The first was tiny, just a few kilobytes. But not B.

B was huge.

It contained two files, identical in size; one was probably a backup of the other. Two identical files of such immensity it simply boggled the mind. This chip: it was like the whole world was written inside it. Whoever had made this thing and put it inside the girl, that person was not like anyone he knew; they did not seem to be from a world he was part of. He wondered if he should maybe get Elton, ask him what he thought. But the snores coming from the back of the hut told him this would be a waste of his energy.

When Michael opened the file, as he did in due course, he did it almost furtively, one hand raised before his eyes, which were peeking through his fingers.

THIRTY-THREE.

A lucky stroke: approaching the Infirmary, Peter saw a single Watcher standing guard. He marched straight up the steps.

"Evening, Dale."

Dale's cross hung loosely at his side. He sighed with exasperation, cocking his head a little, giving Peter his good ear. "You know I can't let you in."

Peter craned his neck to look past Dale through the front windows. A lantern was glowing on the desk.

"Sara inside?"

"She left a little while ago. Said she was getting something to eat."

Peter held his ground, saying nothing more. It was a waiting game, he knew. He could see the indecision moving through Dale's face. At last he huffed in surrender and stood aside.

"Flyers. Just be quick about it."

Peter stepped through the door and moved back into the ward. The girl was curled on the cot, her knees tucked against her chest, facing away. At the sound of his entry, she made no movement; Peter guessed she was asleep.

He positioned a chair by the cot and sat with his chin in his hands. Under the tousle of her hair, he could see the mark on her neck where Sara had cut away the transmitter-a barely detectible line, almost completely healed.

She roused then, as if to meet his thoughts, and shifted on the cot to face him. The whites of her eyes were moist and full, shining in the lamplight that leaked through the curtain.

"Hey," he said. His voice felt thick in his throat. "How are you feeling?"

Her hands were pressed together, buried to her slender wrists in the crevice between her knees. Everything about the way she held her body seemed conceived to make her appear smaller than she was.

"I came to thank you, for saving me."

A quick tightening of her shoulders under the gown. You're welcome.

How strange it was, speaking this way-strange because it wasn't so strange. He had never heard the sound of the girl's voice, and yet he did not feel this as a lack. There was something calming about it, as if she had put aside the noise of words.

"I don't suppose you feel like talking," Peter ventured. "Like maybe telling me your name? We could start with that, if you want."

The girl said nothing, indicated nothing. Why would I tell you my name?

"Well, that's okay," Peter said. "I don't mind. We can just sit here."

Which was what he did; he sat with her, in the dark. After a time, a slackness came into the girl's face. More minutes passed, and without any further acknowledgment of his presence, she closed her eyes again.

As Peter waited in the quiet, a sudden weariness came over him, and with it a memory: of a night, long ago, when he had come into the Infirmary and seen his mother watching over one of her patients-just as he was doing now. He couldn't remember who this person was or if, in fact, the memory was several memories, folded over one another. It could have been one night or many. But on the night he recalled, he had stepped through the curtain and found his mother sitting in a chair by one of the cots, her head tipped to the side, and knew she was asleep. The person on the cot was a child, a small form hidden in darkness; the only light came from a candle on a tray by the bed. He moved forward, not speaking; no one else was in the room. His mother stirred, tilting her face toward him. She was young, and healthy, and he was glad, so glad, to see her again.

Take care of your brother, Theo.

-Mama, he said. I'm Peter.

He's not strong, like you.

He was jarred by voices outside and the clatter of the opening door. Sara strode into the ward, the lantern swinging from her hand.

"Peter? Is everything okay?"

He blinked into the sudden blaze. It took him a moment to reassemble his sense of where he was. He had slept only a minute, and yet it felt like longer. Already the memory, and the dream it had produced, were gone.

"I was just ... I don't know." Why was he apologizing? "I think I must have dozed off."

Sara was busying herself with the lantern, moving a wheeled tray to the side of the cot, where the girl was sitting up, an alert and watchful expression on her face.

"How'd you talk Dale into letting you in?"

"Oh, Dale's all right."

Sara sat on the girl's cot and opened her kit to reveal what she'd brought: flatbread, an apple, a wedge of cheese.

"Hungry?"

The girl ate quickly, polishing off her meal with darting bites: first the bread and then the cheese, which she sniffed suspiciously before tasting, and finally the apple, right down to the core. When it was gone she wiped her face with the back of her hand, smearing juice over her cheeks.

"Well, I guess that settles it," Sara declared. "Not the best table manners I've ever seen, but your appetite is normal enough. I'm going to check your dressing, okay?"

Sara untied the gown, drawing it aside to expose the girl's bandaged shoulder while leaving the rest covered. With a pair of shears, she snipped the cloth away. Where the bolt had entered, tearing skin and muscle and bone, all that remained was a small pink depression. It reminded Peter of a baby's flesh, that soft freshness of new skin.

"All my patients should heal so fast. No point in leaving those stitches in, I guess. Turn around so I can do the back."

The girl complied, swiveling on the cot; Sara took up a pair of tweezers and began pulling the sutures from the exit wound, dropping them one by one into a metal basin.

"Does anybody else know about this?" Peter asked.

"About the way she heals? I don't think so."

"So nobody else has been in to see her since this afternoon."

She clipped off the final stitch. "Just Jimmy." She pulled the girl's gown back over her shoulder. "There you go, all set."

"Jimmy? What did he want?"

"I don't know, I assume Sanjay sent him." Sara shifted on the cot to look at Peter. "It was kind of strange, actually. I never heard him come in, I just looked up and there he was, standing in the doorway with this ... look on his face."

"A look?"

"I don't know how else to describe it. I told him she hadn't said anything, and then he left. But that was hours ago."

Peter felt suddenly rattled. What did she mean by a look? What had Jimmy seen?

Sara took up her tweezers again. "Okay, your turn."

Peter was about to say, My turn for what? But then he remembered: his elbow. The bandage had long since worn down to a filthy rag. He guessed the cut was healed by now; he hadn't looked at it for days.

He sat on one of the empty cots. Sara took a place beside him and unwrapped the bandage, releasing a sour odor of stale skin.

"Did you bother keeping this thing clean at all?"

"I guess I forgot."

She took hold of the arm, bending closely with the tweezers. Peter was aware of the girl's eyes, intently watching them.

"Any news from Michael?" He felt a jab of pain as she tugged the first suture. "Ow, be careful."

"It would help if you held still." Sara repositioned his arm, not looking at him, and resumed her work. "I stopped by the Lighthouse on the way back from the house. He's still working. Elton's helping him."

"Elton? Is that so smart?"

"Don't worry, we can trust him." Her eyes flicked upward with a troubled glance. "Funny how we're all talking like that, all of a sudden. Who can trust who." She gave his arm a pat. "There, move it around a little."

Balling his hand into a fist, he pumped his arm back and forth. "Good as new."

Sara had stepped to the pump to clean her tools. She turned and faced him, drying her hands on a rag.

"Honestly, Peter. Sometimes I worry about you."