Jack Morrisey had been a journalist long enough to know that the best stories are the ones you do not understand when you are living them. He was thirty-eight, thin in the way that city men are thin—not from illness but from walking too many blocks and eating too little. His suit was worn at the elbows, and his tie was the color of a bruise.

The call came on a Thursday. It was from a man named Harrington, who worked in public relations for a company called Voss Technologies. Harrington's voice was smooth, like oil on water.

"Mr. Morrisey," he said. "We have a situation. One of our scientists is... struggling. We would like someone to document his final days. Not for publication. For our records."

"Final days?" Jack said. "Is he dying?"

"No. Not physically. But he is ending something. And we would like a witness."

Jack asked what that meant. Harrington said it was classified. Jack said he did not do classified. Harrington said the pay was ten thousand dollars. Jack said he would think about it.

He thought about it for exactly three minutes. Ten thousand dollars was a lot of money in 1947. It was enough to pay off his mortgage, fix his car, and take his ex-wife Diane out to dinner at a restaurant that did not serve coffee that tasted like burnt pennies.

He called Harrington back. "I will do it."

Dr. Richard Voss was fifty-five,瘦弱, and lived in a brownstone on the Upper East Side that smelled of old paper and something else—something metallic, like the air before a thunderstorm. Jack met him in a study that was buried under piles of notebooks and loose pages. Voss sat in a leather armchair that had seen better decades, his hands shaking as he held a cup of tea he would not drink.

"Mr. Morrisey," Voss said. His voice was soft, like a man who had forgotten how to project it. "I have been expecting you."

"You have?"

"I know who you are. I know what they told you. You are here to watch me. To record me. To be the witness to my ending."

Jack sat down in the chair opposite him. "What am I witnessing, Doctor?"

Voss looked at him for a long time. Then he said, "I have discovered something. Something that changes everything. And I do not know if it is a gift or a curse."

"What is it?"

Voss reached into his desk drawer and pulled out a small object. It was a cube, no larger than a dice, made of a material that Jack could not identify. It was not metal, not glass, not plastic. It was something else—something that seemed to absorb the light around it rather than reflect it.

"This," Voss said, "is a fragment of something I found in a meteorite that fell in Kansas three years ago. When I exposed it to electromagnetic radiation, it... changed reality."

Jack stared at it. "Changed reality?"

"In a small way. Initially. I placed a cup of water on the table, and the cube made it into wine. Not metaphorically. Actual wine. I tested it. Chemical analysis confirmed it was wine."

"That is impossible," Jack said.

"Is it?" Voss set the cube down on the table between them. It sat there, dark and still, like a hole in the world. "I have spent three years studying it. And I have learned that reality is not fixed. It is... malleable. The cube is a tool. A key. And I have been using it to explore what is possible."

"What have you found?"

Voss leaned back in his chair. His eyes were red-rimmed, as if he had not slept in days. "I have found that the cube can change anything. Small things, at first. A cup of water into wine. A piece of paper into gold. But the more I use it, the bigger the changes become. And the more I change, the more I realize—reality has rules. And when you break them, something breaks with them."

"What do you mean?"

Voss did not answer immediately. He looked at Jack with an expression that Jack could not read. It was not fear. It was something worse than fear—it was the look of a man who has seen the bottom of a well and is no longer sure he wants to climb out.

"Last week," Voss said quietly, "I changed something. Something big. I changed... myself."

Jack felt a coldness in his chest. "What do you mean?"

"I made myself smarter. Faster. Stronger. I thought it would be good. And for a while, it was. But then I realized—I was changing too much. I was becoming someone else. And I do not know if that someone else is better or worse. I only know that it is not me."

Jack sat in silence. The cube sat on the table between them, dark and still.

"What are you going to do?" Jack asked finally.

Voss looked at the cube. "I do not know. I have used it six times. Each time, I change something bigger. And each time, I become less myself. I think—perhaps I should stop. But I cannot. The cube calls to me. It promises more. And I am too weak to refuse."

Jack stood up. He walked to the door and looked back at Voss one last time. The scientist was staring at the cube with an expression of hunger and terror intertwined, like a child looking at a flame.

"Goodbye, Doctor," Jack said.

"Goodbye, Mr. Morrisey."

Jack left the brownstone and walked down the stairs. He did not look back. He knew he would not need to.

The next morning, Jack wrote his report. He did not publish it. He sent it to Harrington, as he had promised. Harrington called him that afternoon.

"We received your report," Harrington said. "Thank you. The matter is now resolved."

"Resolved how?" Jack asked.

"There is no need to elaborate, Mr. Morrisey. Your payment has been deposited. You will receive it by end of business."

Jack hung up the phone. He sat at his desk and stared at the wall. He thought about Voss, sitting in his study, staring at the cube. He thought about the six changes. He thought about what Voss had become.

He never saw Dr. Voss again. A week later, the brownstone was empty. The furniture was gone. The notebooks were gone. The cube was gone. All that remained was the smell of old paper and something metallic, like the air before a thunderstorm.

Jack sat in his office and looked out the window at the New York sky. It was gray, as it always was. He knew the truth about what had happened in that brownstone. But he also knew that the truth did not matter. People did not want the truth. They wanted stories. And his story had no ending that anyone would believe.