The day before she disappeared, the missing woman filed the report herself.

Both the reporting person and missing person fields bore the name Shen Yanqiu. She was twenty-nine, a piano tuner. She said she would vanish at the station the following night. Before leaving, she offered one last warning: “Don’t trust the station clock.” The officer on duty remembered her gray scarf and the thin scar on the ring finger of her left hand as she signed the form.

The next afternoon, the real Shen Yanqiu returned from the airport. She had never been to the police station. Her gray scarf was still locked inside her suitcase. But the scar on her finger matched the officer’s description exactly.

Detective Xu Wen laid the report before her. She studied it for a long time and said the handwriting wasn’t hers. He was about to put it away when she pointed to a tiny correction beneath the date. “That’s how my husband writes. If he puts down a seven when he means a one, he changes the shape and adds a dot beside it.”

Xu Wen checked the station’s security footage. At one in the morning, the door opened on its own. No one appeared on camera. The officer looked up and spoke to an empty chair for eleven minutes, then held out a pen. The pen hung in midair as words appeared across the form, line by line.

Xu Wen did not rush to call it a ghost. Cameras could lie. So could clocks.

He matched the footage against a camera outside the convenience store across the street. The police station clock was seven minutes slow. The door had actually opened at 12:53 a.m.—just as Shen Yanqiu’s husband, fresh from buying a bottle of water, passed the station.

He did not go in. He only stopped and glanced through the glass doors.

Xu Wen enlarged the frame. In the reflection, a woman in a gray scarf stood behind the husband. Her left hand rested on his shoulder, a scar visible below her cuff.

Shen Yanqiu leaned toward the screen. For a moment, she stopped breathing. “That coat… I only bought it yesterday.”