Beside him, Doyle stirred, rubbing his eyes. He sat up in his seat and looked around. “Are we there yet, Dad?”

“It’s just a checkpoint. Go back to sleep.”

Wolgast pulled the car out of line and drew up to the nearest uniform. He rolled down the window and held up his credentials.

“Federal agents. Any way you can wave us through?”

The guard was just a kid, his face soft and spotted with pimples. The body armor bulked him up, but Wolgast could tell he was probably no more than a welterweight. He should be back at home, Wolgast thought, wherever that was, snug in bed and dreaming of some girl in his algebra class, not standing on a highway in Mississippi wearing thirty pounds of Kevlar, holding an assault rifle over his chest.

He eyed Wolgast’s credentials with only vague interest, then tipped his head toward a concrete building sitting off the highway.

“You’ll have to pull over to the station, sir.”

Wolgast sighed with irritation. “Son, I don’t have time for this.”

“You want to skip the lines, you do.”

At that moment, a second guard stepped into their headlights. He turned his hips to their vehicle and unslung his weapon. What the fuck, Wolgast thought.

“For Pete’s sake. Is that really necessary?”

“Hands where we can see them, sir!” the second man barked.

“For crying out loud,” Doyle said.

The first guard turned toward the man in the headlights. He waved his hand to tell him to lower his weapon. “Cool it, Duane. They’re feds.” The second man hesitated, then shrugged and walked away.

“Sorry about that. Just pull around. They’ll have you out fast.”

“They better,” Wolgast said.

In the station, the OD took their credentials and asked them to wait while he phoned in their ID numbers. FBI, Homeland Security, even state and local cops; everybody was on a centralized system now, their movements tracked. Wolgast poured himself a cup of sludgy coffee from the urn, took a few halfhearted sips, and tossed it in the trash. There was a No Smoking sign, but the room reeked like an old ashtray. The clock on the wall said it was just past six; in about an hour the sun would be coming up.

The OD stepped back to the counter with their credentials. He was a trim man, nondescript, wearing the ash gray uniform of Homeland Security. “Okay, gentlemen. Let’s get you on your merry way. Just one thing: the system says you were booked to fly to Denver tonight. Probably just an error, but I need to log it.”

Wolgast had his answer ready. “We were. We were redirected to Nashville to pick up a federal witness.”

The duty officer considered this a minute, then nodded. He typed the information into his computer. “Fair enough. Raw deal, they didn’t fly you. That must be a thousand miles.”

“Tell me about it. I just go where I’m told.”

“Amen, brother.”

They returned to their car, and a guard waved them to the exit. Moments later they were back on the highway.

“Nashville?” Doyle asked.

Wolgast nodded, fixing his eyes on the road ahead. “Think about it. I-55 has checkpoints in Arkansas and Illinois, one just south of St. Louis and one about halfway between Normal and Chicago. But you take 40 east across Tennessee, the first checkpoint is all the way across the state, at the I-40 and 75 interchange. Ergo, this is the last checkpoint between here and Nashville, so the system won’t know we never went there. We can make the pickup in Memphis, cross into Arkansas, bypass the Oklahoma checkpoint by driving the long way around Tulsa, pick up 70 north of Wichita, and meet Richards at the Colorado border. One checkpoint between here and Telluride, and Sykes can handle that. And nowhere does it say we went to Memphis.”

Doyle frowned. “What about the bridge on 40?”

“We’ll have to avoid it, but there’s a pretty easy detour. About fifty miles south of Memphis there’s an older bridge across the river, connects to a state highway on the Arkansas side. The bridge isn’t rated for the big tankers coming up from the N.O., so it’s passenger cars only and mostly automated. The bar-code scanner will pick us up, and so will the cameras. But that’s easy to take care of later if we have to. Then we just work our way north and pick up I-40 south of Little Rock.”

They drove on. Wolgast thought about turning on the radio, maybe getting a weather report, but decided against it; he was still alert, despite the hour, and needed to keep his mind focused. When the sky paled to gray, they were a little north of Jackson, making good time. The rain stopped, then started again. Around them the land rose in gentle swells like waves far out to sea. Though it seemed like days ago, Wolgast was still thinking about the message from Sykes.

Caucasian female. Amy NLN. Zero footprint. 20323 Poplar Ave., Memphis, TN. Make pickup by Saturday noon latest. No contact. TUR. Sykes.

TUR: travel under radar.

Don’t just catch a ghost, Agent Wolgast; be a ghost.

“Do you want me to drive?” Doyle asked, cutting the silence, and Wolgast could tell from his voice that he’d been thinking the same thing. Amy NLN. Who was Amy NLN?

He shook his head. Around them, the day’s first light spread over the Mississippi Delta like a sodden blanket. He tapped the wipers to clear the mist away.

“No,” he said. “I’m good.”

FIVE

Something was wrong with Subject Zero.

For six days straight he hadn’t come out of the corner, not even to feed. He just kind of hung there, like some kind of giant insect. Grey could see him on the infrared, a glowing blob in the shadows. From time to time he’d change positions, a few feet to the left or right, but that was it, and Grey had never seen him actually do this. Grey would just lift his face from the monitor, or leave containment to get a cup of coffee or sneak a smoke in the break room, and by the time he looked again, he’d find Zero hanging someplace else.

Hanging? Sticking? Hell, levitating?

No one had explained a goddamn thing to Grey. Not word one. Like, for starters, what Zero actually was. There were things about him that Grey would say were sort of human. Such as, he had two arms and two legs. There was a head where a head should be, and ears and eyes and a mouth. He even had something like a johnson dangling down south, a curled-up little seahorse of a thing. But that’s where the similarities stopped.

For instance: Subject Zero glowed. In the infrared, any heat source would do that. But the image of Subject Zero flared on the screen like a lit match, almost too bright to look at. Even his crap glowed. His hairless body, smooth and shiny as glass, looked coiled-that was the word Grey thought of, like the skin was stretched over lengths of coiled rope-and his eyes were the orange of highway cones. But the teeth were the worst. Every once in a while Grey would hear a little tinkling sound on the audio, and know it was the sound of one more tooth dropped from Zero’s mouth to the cement. They rained down at the rate of half a dozen a day. These went into the incinerator, like everything else; it was one of Grey’s jobs to sweep them up, and it gave him the shivers to see them, long as the little swords you’d get in a fancy drink. Just the thing if, say, you wanted to unzip a rabbit and empty it out in two seconds flat.

There was something about him that was different than the others, too. Not that he looked all that different. The glowsticks were all a bunch of ugly bastards, and over the six months Grey had been working on Level 4, he’d gotten used to their appearance. There were little differences, of course, that you could pick up if you looked hard. Number Six was a little shorter than the others, Number Nine a little more active, Number Seven liked to eat hanging upside down and made a goddamn mess, Number One was always chatting away, that weird sound they made, a wet clicking from deep in their throats that reminded Grey of nothing.