She wanted to go back to sleep but she couldn't, so she just stayed still until she had to pee badly enough to go and squat, wide-legged, over the stinking bucket she found in one corner. She tugged down her jeans and underwear, trying to balance on the balls of her feet, while she pulled the crotch of her clothes as far away from her body as she could. She tried to tell herself that it was the same as when you were driving down a highway and there was no rest stop, so you had to go in the woods. There was no toilet paper and no leaves, so she did a little hopping dance that she hoped would shake herself dry.

Making her way back, she saw Sketchy Dave starting to stir and hoped that she hadn't woken him up. She tucked her legs back into the blanket, now noticing that the vivid odors of the platform combined into a smell she couldn't identify. Light streamed down from a grate in the street above, illuminating black, grime-streaked iron beams.

"Hey, you slept for almost fourteen hours," he said, turning on his side and stretching. He was shirtless, and even in the gloom she could see what looked like a bullet wound in the center of his chest. It pulled the rest of his skin toward it, a sinking pool that drew everything to his heart.

Dave moved over to the hibachi and kindled it with matches and balls of newspaper. Then he set a pot on top, shaking grounds out of a tin and pouring water from a plastic gallon milk jug.

She must have stared at him for too long, because he looked up with a grin. "Want some? It's cowboy coffee. No milk, but there's plenty of sugar if you want it."

Nodding, she bundled the blankets around her. He strained her a steaming cup and she held it gratefully, using it first to warm her hands and then her cheeks. She ran her fingers absently over her scalp. She felt thin stubble, like fine sandpaper.

"You might as well come scrounging with me," Sketchy Dave said, looking over at the mattress with something like longing. "Luis and Lolli'll sleep forever if you let 'em."

"How come you're up?" she asked, and took a sip from the mug. The coffee was bitter, but Val found it satisfying to drink, flavored with smoke and nothing else. Grounds floated on the surface, making a black film.

He shrugged. "I'm the junkman. Gotta go see what the suits throw out."

She nodded.

"It's a skill, like those pigs that can smell out truffles. You either got it or you don't. One time I found a Rolex watch in with some junk mail and burned toast. It was like someone tossed everything on the kitchen table right into the garbage without looking at it."

Despite what Dave had said about them sleeping in, Lolli groaned and slid out from under Luis's arm. Her eyes were still mostly closed and she had a dirty kimono-style dressing gown thrown over yesterday's clothes. She looked beautiful in a way that Val never would, lush and hard all at the same time.

Lolli gave Luis a shove. He grunted and rolled over, propping himself up on his elbows. There was a flicker of movement along the wall and the cat strolled out, butting its head against Luis's hand.

"She likes you, see?" Lolli said.

"Aren't you worried about rats getting her?" Val asked. "She's kind of little."

"Not really," Luis said darkly.

"Come on, you just named her last night." Lolli picked the cat up and dumped her on her own lap.

"Yeah," Dave said. "Polly and Lolli."

"Polyhymnia," said Luis.

Val leaned forward. "What does Poly-whatever mean?"

Dave poured another cup for Luis. "Polyhymnia's some kind of Greek Muse. I don't know which one. Ask him."

"Doesn't matter," Luis said, lighting a cigarette stub.

Sketchy Dave shrugged, as if apologizing for knowing as much as he did. "Our mom used to be a librarian."

Val didn't really know what a Muse was, except for a dim recollection of studying the Odyssey in ninth grade. "What's your mom now?"

"Dead," said Luis. "Our dad shot her."

Val caught her breath and was about to stammer out an apology, but Sketchy Dave spoke first.

"I thought maybe I'd be a librarian, too." Dave looked at Luis. "The library is a good place to think. Kind of like down here." He turned back to Val. "Did you know I was the first one to find this spot?"

Val shook her head.

"Scrounged it. I'm the prince of refuse, the lord of litter."

Lolli laughed and Dave's smile broadened. He seemed more pleased by his joke now that he knew Lolli liked it.

"You didn't want to be a librarian," Luis said, shaking his head.

"Luis knows all about mythology." Lolli took a sip of coffee. "Like Hermes. Tell her about Hermes."

"He's a psychopomp." Luis gave Val a dark look, as if daring her to ask what that meant. "He travels between the world of the living and the world of the dead. A courier, kind of. That's what Lolli wants me to say. But forget that for a minute; you asked about rats getting Polly. What do you know about rats?"

Val shook her head. "Not much. I think one stepped over my foot on my way in here."

Lolli snorted and even Dave smiled, but Luis's face was intense. His voice had a ritual quality, as though he'd said this many times before. "Rats get poisoned, shot, trapped, beaten, just like street people, just like people, just like us. Everybody hates rats. People hate the way they move, the way they hop, they hate the sound of their paws skittering all over the floor. Rats're always the villains."

Val looked into the shadows. Luis seemed to be waiting for her to react, but she didn't know what the right response was. She wasn't even sure she knew what he was really talking about.

He went on. "But they're strong. They got teeth that are tougher than iron. They can gnaw through anything—wood beams, plaster walls, copper pipes—anything but steel."

"Or diamond," Lolli said with a smirk. She didn't seem at all unnerved by his speech.

Luis barely paused to acknowledge Lolli had spoken. His eyes stayed on Val. "People used to fight them in pits here in the city. Fight them against ferrets, against dogs, against people. That's how tough they are."

Dave smiled, as if all this made sense to him.

"They're smart, too. You ever see a rat on the subway? Sometimes they get on a car at one platform and detrain at the next stop. They're taking a ride."

"I've never seen that," Lolli scoffed.

"I don't care if you ever saw it or not." Luis looked at Dave, who'd stopped nodding. Then he turned to Val. "I can sing rats' praises morning, noon, and night and it won't change the way you feel about them, will it? But what if I told you that there were things out there that think of you like you think of rats?"

"What things?" Val asked, remembering what Lolli had said the night before. "Do you mean fa—" Lolli sunk her nails into Val's arm.

Luis looked at her for a long time. "Another thing about rats. They're neophobic. You know what that means?"

Val shook her head.

"They don't trust new things," said Luis, unsmiling. "And neither should we." Then he got up, chucking his stub of a cigarette out onto the tracks, and walked up the steps and out of the station.

What an asshole. Val picked at a loose thread on her pants, pulling at it, unraveling the fabric. I should go home, she thought. But she didn't go anywhere.

"Don't worry about him," Lolli said. "Just because he can see things we can't, he thinks he's better than us." She watched until Luis was out of sight and then picked up a small lunchbox with a pink cat on it. Opening the latch, she took out and unrolled a T-shirt to spread out the contents: a syringe, an antique silver-plated spoon with some of the silver worn off, a pair of flesh-toned pantyhose, several tiny press-and-seal baggies containing an amber powder that glimmered a faint blue in the dim light. Lolli shouldered off one sleeve of her dressing gown and Val could see black marks on the inside of her elbow, like the skin there was charred.

"Chill out, Lolli," Sketchy Dave said. "Not in front of her. Not this."

Lolli reclined against a pile of pillows and bags. "I like needles. I like the feeling of the steel under my skin." She looked at Val. "You can get a little buzz off shooting up water. You can even shoot up vodka. Goes right into your bloodstream. Makes you drunker cheaper."

Val rubbed her arm. "It can't be too much worse than you scratching me." She should have been horrified, but the ritual of it fascinated her, the way all the tools were laid out on the dirty shirt, waiting to be used in turn. It made her think of something, but she wasn't quite sure what.

"I'm sorry about your arm! He was in such a mood, I didn't want him to get started about the faeries." Lolli made a face as she cooked the powder with a little water over the hibachi. It bubbled on the spoon. The sweet smell, like burnt sugar, filled Val's nose. Lolli sucked it up through the needle, then tapped the bubbles to the top, pushing them out with a squirt of liquid. Tying off her upper arm with pantyhose, Lolli inserted the tip slowly into one of the black marks on her arm.

"Now I'm a magician," Lolli said.

It came to Val then that what she was reminded of was her mother putting on makeup—laying out the tools and then using them one by one. First foundation, then powder, eye shadow, eyeliner, blush, all done with the same calm ceremony. The fusion of the images unnerved her.

"You shouldn't do that in front of her," Dave repeated, signaling in Val's direction with a bob of his chin.

"She doesn't mind. Do you, Val?"

Val didn't know what she thought. She'd never seen anyone give themselves a shot like that, professional as a doctor.

"She's not supposed to see," Dave said. Val watched him get up to pace the platform. He stopped under a mosaic of tiles spelling out "WORTH." Behind him, she thought she saw the darkness change its shape, spreading like ink dropped into water. Dave seemed to see it, too. His eyes widened. "Don't do this, Lolli."

The gloom seemed to be coalescing into indistinct shapes that made the hair stand up on Val's arms. Blurry horns, mouths crowded with teeth, and claws as long as branches formed and then dissipated.

"What's the matter? You scared?" Lolli sneered at Dave before turning back to Val. "He's afraid of his own shadow. That's why we call him Sketchy."

Val said nothing, still staring at the moving darkness.

"Come on," Dave said to Val, moving unsteadily toward the stairs. "Let's go scrounge."

Lolli pouted exaggeratedly. "No way. I found her. She's my new friend and I want her to stay here and play with me."

Play with her? Val didn't know what Lolli meant, but she didn't like the sound of it. Right then, Val wanted nothing more than to get out of the claustrophobic tunnels and away from the shifting shade. Her heart beat so fast that she feared it would spring out of her chest like the bird in a cuckoo clock. "I have to get some air." She stood up.

"Stay," Lolli said lazily. Her hair seemed bluer than it had a moment ago, shot through with aquamarine highlights, and the air flickered around her the way it did over a street in the hot sun. "You won't believe how much fun you'll have."

"Let's go," Dave said.

"Why do you always have to be so boring?" Lolli rolled her eyes and lit her cigarette off of the fire. A good half of it went up in flames, and she dragged on it anyway. Her voice was slow, slurred, but her gaze, even from drowsy eyes, was severe.

Dave started up the yellow maintenance stairs and Val followed him quickly, filled with an uncertain dread. At the top, Dave pushed up the grating and they stepped out onto the sidewalk. As she emerged into the bright, late-afternoon sunlight, she realized that she'd left her backpack on the platform with her return ticket still inside of it. She half-turned back to the grate and then hesitated. She wanted the bag, but Lolli had been acting so strange… everything had gone so strange. But maybe even the smell of the drug could make shadows move? She ran through a health-class list of substances to avoid—heroin, PCP, angel dust, cocaine, crystal meth, special K. She didn't know much about any of them. No one she knew did anything more than smoke weed or drink.

"Coming?" Dave called. She noticed the worn-down soles of his boots, the stains covering his jeans, the tightly corded muscles of his thin arms.

"I left my—," she started to say, but then thought better of it. "Never mind."

"It's just the way Lolli is," he said with a sad smile, looking at the sidewalk and not at Val's eyes. "Nothing's going to change her."

Val looked around at the large building across the street and the concrete park they were standing in, with its dried-up and cracked pond, and an abandoned shopping cart. "If it's so easy to get in this way, why did we come through the tunnels?"

Dave looked uncomfortable and he was silent for a moment. "Well, the financial district is pretty packed around five on a Friday, but it's nearly empty on a Saturday. You don't want to be coming up out of the sidewalk with a million people around."

"Is that all?" Val asked.

"And I didn't trust you," Dave said.

Val tried to smile, because she guessed that he had a little faith in her now, but all she could think of was what would have happened if somewhere, walking through the tunnels, he had decided that he couldn't trust her.

Val picked through a Dumpster. The food smells still made her gag, but after two previous trash piles, she was getting more used to them. She pushed aside mounds of shredded paper, but found only a few boards studded with nails, empty CD cases, and a broken picture frame.