The rain fell on Los Angeles like it had a personal grudge against the city. It had been falling for three days, and the streets were rivers of neon and exhaust, and Maggie O'Brien sat in her diner on Sunset Boulevard, stirring coffee that had gone cold twenty minutes ago and watching the door the way a sentry watches a gate she knows will not hold.

The diner was called Cherry Pie, though they had not had a pie in months. It was owned by a man named Sal who had once been a boxer and now had a face that looked like it had been designed by someone who only understood the concept of "hurt." He sat behind the counter counting tips that were not enough, and the waitress named Lorna was smoking by the kitchen door, and the regulars were the usual collection of men who looked like they had been running for a long time and had not yet decided to stop.

Maggie was one of them.

She had come to Los Angeles two years ago with a suitcase and a name she was not sure she could keep. She had worked in a factory that made parts for airplanes she would never fly in, and she had saved enough to rent a room above a laundromat in a part of town where the streetlights flickered like they were trying to communicate something. She had opened Cherry Pie because she could not imagine doing anything else, and because the previous owner had died and left the equipment for a song, which in this town meant exactly what you would expect.

The woman came in at four in the afternoon, which was not a usual time, and that was the first thing Maggie noticed. The second thing was that she was wearing a coat that cost more than Maggie's entire inventory, and the third thing was that she was looking at Maggie the way a person looks at someone who is holding something they want.

"I need to speak to you," the woman said.

"You're in the wrong place," Maggie said, stirring her cold coffee again.

"I'm in exactly the right place. I know what you heard."

Maggie's hands stopped moving. "I don't know what you're talking about."

"Don't. I came from San Francisco to find you, and I am not going back without what I came for."

The woman was trembling. Not from cold—the diner was hot and smelled of grease and old cigarettes—but from something deeper, something that lived in the bones. Maggie knew that kind of trembling. She had done it herself, in the bathroom of a gas station outside Bakersfield, after she had heard the conversation through the wall.

It had been three weeks ago. She had been in the bathroom washing her hands, the way you wash your hands when you want to wash something else away, and through the thin wall between the bathroom and the booth next to it, she had heard two men talking. One of them was named Vinnie, which she knew because the other one called him that. The other man's name she did not know, but his voice was the kind of voice that belonged to someone who was used to being obeyed.

"They can't know," the unknown voice said. "If they know, it's over."

"It's already over," Vinnie said. "The shipment's gone. The money's gone. And now we have a problem."

"What kind of problem?"

"The kind that gets people killed."

Maggie had finished washing her hands and opened the bathroom door and walked out and ordered a coffee and tried to make her face look like a face that had not just heard something that would get her killed. She had paid for the coffee and left a dollar bill that was not hers and walked out into the parking lot and got into her car and sat there for twenty minutes with the engine off, trying to decide whether to drive away and never look back or do something stupid and brave.

She had done neither. She had gone back to work the next day and the day after that and the day after that, and she had told herself that she had not heard anything, that the wall had been thin and her imagination had been thick and nothing was real.

But it was real. The woman across from her proved that.

"Who are you?" Maggie said.

"My name is Dorothy. I was supposed to be on the shipment."

Maggie felt the floor tilt slightly beneath her, the way it does when you realize the ground you have been standing on is not as solid as you thought. "What shipment?"

Dorothy leaned forward, and the smell of expensive perfume could not quite mask the smell of fear. "Cocaine. Three kilos. It was supposed to go from Long Beach to Chicago, and it didn't make it. And the man who was supposed to be guarding it is dead, and now everyone who had anything to do with it is looking for the drugs, and I know they're not in Chicago."

"Because you have them."

"Because I know where they are." Dorothy's eyes were bright and desperate. "And I need your help."

Maggie laughed, and it was not a nice laugh. "You come into my diner, tell me I heard something I shouldn't have, tell me you have drugs hidden somewhere in this town, and you ask me for help? I run a coffee shop. I make coffee and I serve pie that doesn't exist and I try to keep my head down."

"Your head is already up," Dorothy said. "That's the problem. You heard what you heard. They know someone heard. And they're going to find out it was you."

As if on cue, the door opened and a man walked in. He was tall and wore a suit that fit him too well and a smile that did not reach his eyes. He looked around the diner the way a wolf looks at a field of sheep, calculating and patient.

Maggie's blood went cold. She knew that face. She had seen it in the diner across the street, standing next to Vinnie, listening to the voice that belonged to someone who was used to being obeyed.

"Can I help you?" Sal said from behind the counter, and his voice did not shake, which was impressive.

The man smiled at Sal and then turned his eyes to Maggie, and the smile changed, became something sharper. "Maggie, isn't it? I'm Detective Ray Callahan. I'd like to ask you a few questions."

Maggie looked at Dorothy, who had gone very still, very small in her chair. She looked at Sal, who was watching her with an expression she could not read. She looked at Lorna, who had stopped smoking and was watching from the kitchen door with wide eyes.

"Sure," Maggie said. "Let's talk."

But as she stood up, her mind was already running, already calculating, already doing the thing she had always been good at: surviving. She knew something that people wanted. That made her dangerous. And in this town, dangerous people did not last long.

She had one advantage: she did not know where the drugs were. Dorothy had told her everything, but not the location, because Dorothy did not trust her enough to say it out loud. And Maggie knew that the only person who could tell her where the drugs were was sitting across from her, trembling in a coat that cost more than her life.

She also knew that Detective Ray Callahan was not a detective. She had seen the way he looked at Dorothy—not with the eyes of a man doing his job, but with the eyes of a man who had a score to settle.

The game had begun. And Maggie O'Brien, who had come to Los Angeles with a suitcase and a name she was not sure she could keep, realized with a clarity that was almost beautiful that she was already in too deep to get out.

She just had to figure out how deep.

Three days later, she was lying in a motel room off the 101, staring at a water stain on the ceiling that looked like a map of a country that did not exist, and she understood the truth: there had never been any drugs. There had never been any shipment. Dorothy had made it all up, or perhaps she had believed it was real, or perhaps even she did not know what was real anymore.

The only thing that was real was the fear in Dorothy's eyes, and the gun in Maggie's drawer, and the man in the suit who was still looking for something he would never find.

She got up, dressed, and walked out into the rain.