The water was cold and the bullets were colder.

Jack Callahan hit the surface of the Mississippi upside down, tasted mud and gasoline, and kicked upward with the last of his strength. Something had his ankle—rope or a branch or the dead hand of whatever else was in that river. He grabbed it with both hands and pulled. It held. He pulled harder. It snapped.

He surfaced gasping.

Chicago's north shore was three miles away. The stars were out, indifferent. Behind him, the sounds of gunfire had stopped. In front of him, the water was full of things he did not want to meet.

He swam.

When he reached the shore, he crawled up the bank and lay there for a long time, listening to his own breathing. He was alive. That was unusual. He had been shot at three times in the last hour and apparently missed. Either the men who were shooting at him were terrible shots, or someone wanted him alive.

He checked his pockets. Wallet—gone. Watch—gone. But in his inside jacket pocket, something hummed.

He pulled it out. It was a brass object, roughly the size of a deck of cards, with facets that caught the starlight and broke them into colors he had no names for. It was warm and it was humming and it had appeared in his pocket somewhere between the gunfire and the river.

Jack was a man who had been a Marine, which meant he had seen things that would make a priest quit. He looked at the brass object, turned it over in his hands, and said, "What the hell are you?"

The object clicked. The world tilted.

He woke standing up. The air was different—thicker, smelling of coal smoke and horse manure and something sweet he recognized as whiskey. He was on a street. Gas lamps lined the sidewalk. Men in bowler hats and women in long skirts walked past him. A sign on a building across the street read "CHICAGO—1929."

Jack had seen old photographs. He knew what the past looked like. This was it.

He checked his body. Same clothes—trench coat, fedora, gun in the shoulder holster. Same bruises from the river. Same humming in his pocket where the brass object had been. But the object was gone. In its place, his hand closed around something cold and metal on the ground.

He picked it up. It was a coin—silver, dated 1929, with a symbol on it that matched the facets of the brass object.

"Rough night, pal?"

Jack turned. A woman stood in the doorway of a building across the street. She was wearing a dress that showed more skin than Jack was comfortable with, and she had the kind of beauty that was dangerous in the way a loaded gun is dangerous—obviously, inevitably.

"Depends on your definition of rough," Jack said.

She smiled. "I'm Vivian."

"Jack."

"Well, Jack. You look like a man who needs a drink. Or a doctor. Probably both."

He needed neither. He needed answers. But Vivian was heading toward a building with a sign that read "CONRAD'S" and she was looking at him over her shoulder, and Jack Callahan had never been good at ignoring opportunities.

Conrad's was loud and hot and full of people who had too much money and not enough conscience. Jack ordered whiskey. Vivian ordered nothing—she just leaned against the bar and watched him with eyes that were calculating something he could not read.

"You're not from around here," she said after ten minutes.

"No."

"Not Chicago, I mean. Not this time."

Jack turned to look at her. "What do you know about this?"

Vivian smiled. It was not a warm smile. "I know that you appeared out of nowhere, five years ago, in a river. I know that you have a brass thing that glows when you're in danger. And I know that Conrad's men have been looking for you ever since."

"Conrad who?"

"The man who owns this part of Chicago. Al, actually. Short for Alphonse. You know, like the movie?"

Jack did not. But he was beginning to understand that this brass object—he called it the Key now, because that's what it felt like, like a key to something he had not found yet—was not the first thing of its kind. And he was not the first person to carry it.

The Key clicked in his pocket. He excused himself and stepped outside.

The street was quiet. The gas lamps cast long shadows. Jack pulled out the Key—it was gone, replaced by the silver coin again. He turned it over in his hands.

The world tilted.

He woke in a city that was not Chicago. The buildings were taller, the cars were sleeker, the air smelled of oil and exhaust and possibility. A sign on a building read "LOS ANGELES—1947."

Jack had been in Los Angeles before. He had served nearby, in a place that had a name he did not like to think about. This was different. This was postwar LA—fat with money and ambition and the kind of optimism that only exists before you understand how fragile it is.

He was standing in front of a building with a sign that read "STARLIGHT PICTURES." Through the window, he could see a woman sitting at a desk, surrounded by scripts and telephone receivers and empty coffee cups.

Vivian.

But not the Vivian from 1929. This one was younger, wearing a glasses and a cardigan, with her hair pulled back in a way that made her look more intelligent than beautiful. Which, Jack realized, she was.

He went inside.

She looked up when he entered. Her face went through a series of expressions—surprise, recognition, something darker that he could not name.

"You're early," she said.

"I'm always early."

She studied him. "How many times have you done this?"

"Done what?"

"Came here. Found me. The Key brought you to me again, didn't it?"

Jack sat down. He told her everything—the river, the brass object, 1929, Conrad, the men who had shot at him. Vivian listened without interrupting, her fingers steepled in front of her face.

When he finished, she said, "You're not the first."

"I figured."

"There have been four others. Four people who carried the Key before you. They went to different times, had different experiences. They all found me, eventually. In different forms, different names, but always me."

"Why?"

Vivian stood up and walked to the window. "Because I'm part of the contract. The Key doesn't just let you travel through time. It binds you to something—a purpose, a mission, a debt that was incurred centuries ago and never paid."

"By who?"

"By you. Or a version of you. Time doesn't work the way you think it does, Jack. It's not a line. It's a knot. And you're standing in the middle of it."

Jack did not like contracts. He did not like debts. He did not like being part of something he had not chosen. But he also did not like leaving things unfinished.

"What's the contract?" he asked.

Vivian turned to look at him. Her eyes were sad. "You'll find out. In the next time."

The Key clicked. The world tilted.

He woke in Washington. 1974. The air smelled of diesel and paranoia. Watergate was unfolding on every television set in every bar, and the country was tearing itself apart with the kind of truth that destroys more than lies ever could.

Jack was standing in a newsroom. A young reporter with thick glasses and a nervous twitch was staring at him.

"Who are you?" the reporter asked.

Jack looked down at his hands. They were older. Wrinkled. Scarred. He was older.

The Key was in his pocket, heavier than before. It carried the weight of four lifetimes now—four people who had carried it before him, four contracts they had signed without understanding, four debts they had tried to pay and failed.

He understood now. The Key was not a gift. It was a sentence. And he was serving it, one era at a time.

But he was also beginning to see the pattern—the conspiracy that connected 1929 Chicago to 1947 Hollywood to 1974 Washington. A network of people who had been manipulating history for decades, building toward something that Jack was only beginning to understand.

He lit a cigarette. He exhaled. He started to work.

The investigation took him through three eras, three identities, four deaths that belonged to men who had worn his face. He found documents in a Chicago bank vault, recordings in a Hollywood studio safe, confessions in a Washington jail cell.

And at the end of it all, he found the truth.

The Key had been created by a group of scientists during the Second World War—an OSS project called CHRONOS, designed to access intelligence from different times. The project was shut down when they realized what they had built. The Key was supposed to be destroyed. But someone had kept one. And that someone had started a chain of events that would echo through the century.

The Auditor was real. Jack had seen him in every era—a man in a dark coat, always watching, always following. In 1929 he had been an FBI agent. In 1947 he had been a CIA operative. In 1974 he had been a journalist. But he was always the same person—or a version of the same person, existing in different times, carrying out the same mission: to stop the Key from being used.

Jack found him in a bar on K Street, sitting alone with a glass of bourbon and a newspaper.

"Jack Callahan," the Auditor said. It was not a question.

"Who are you?"

The Auditor smiled. It was not a warm smile. "I'm the one who's been trying to save you from yourself."

"From the contract?"

"From the Key. From the chain. From the five deaths that are waiting for you at the end of it."

Jack looked at his glass. He had not ordered it, but it was there, full and amber and waiting.

"Five deaths?"

"The four before you. And you. The Key kills its carriers. One era at a time, it drains you, uses you, discards you. They all died young. Broken. Alone."

Jack thought of Vivian—in every era, always Vivian, always guiding him, always watching him die. He thought of the brass object in his pocket, warm and humming and hungry.

"Then I'll destroy it," he said.

The Auditor shook his head. "You can't. It's not a thing you can break. It's a contract. And contracts don't end until they're fulfilled."

Jack drank his bourbon. It burned going down and burned more coming up.

"Maybe," he said, "the contract is fulfilled when I choose not to play anymore."

The Auditor studied him for a long time. Then he stood up and walked away.

Jack stayed in the bar until closing. Then he walked to the Mississippi—because somehow, impossibly, he was back in Chicago, and the river was where it had all begun.

He stood on the bank and looked at the Key in his hand. The brass facets caught the moonlight. The hum was almost a song now—a lullaby for the living dead.

He dropped it into the river.

It sank slowly, the facets catching the last light, the hum fading into silence.

Jack turned and walked away. He did not look back.

He went back to Chicago. He opened a private investigation office on State Street. He took cases that paid in cash and left no paper trail. He drank whiskey and smoked cigarettes and tried to forget the sound of a river and the face of a woman who had loved him in five different lives.

Six months later, a woman walked into his office. She was wearing a dress that showed more skin than was professional, and she had the kind of beauty that was dangerous in the way a loaded gun is dangerous.

"Mr. Callahan?" she said.

Jack looked up from his desk. "That depends on who's asking."

"I'm looking for something. Something that was lost in a river."

Jack felt something in his chest tighten. He had dropped the Key. He had watched it sink. He had seen the light fade.

"Maybe it's still there," he said.

The woman smiled. It was not a warm smile.

"Maybe," she said. "But I think it found its way to someone else."

Jack lit a cigarette. He exhaled. He looked out the window at the rain-slicked street.

Outside, a man in a dark coat stood across the road, watching.

[OTMES v2 Objective Codes] TI: 72.4 | M1: 7.0 | M3: 7.5 | M6: 8.0 | M8: 5.0 | N1: 0.70 | N2: 0.30 | K1: 0.70 | K2: 0.30 | Theta: 315° | Style: 黑色讽刺型