The White Coat Behind Black Glass

The Black Coat Behind Black Glass

14:05, I switched off the cafeteria coffee machine.

Once the machine went quiet, the glass surface turned blacker. In the space where the boiling sound and the light used to be, the corridor door showed through. The first day I passed through here, I took that reflection as just a habit of the facility. A white coat passed by first, and one second later the ceiling speaker announced 08:12. What I thought was background wasn't background.

Noeul stood at the end of the table. He saw the angle of the glass before the rest of us did. He stepped back to the point where his own face wasn't reflected.

The text device was in his left hand. His right hand straightened the row of paper cups next to the coffee machine. Anything he touched would later become a different kind of testimony. So it had to be written down first.

`I set the cups. The reflection angle didn't change.`

Go Yura pasted that sentence into the official record window.

Gang Taejun asked.

"The range you can see."

Noeul wrote briefly on the screen.

`Glass. Corridor door. Part of the pharmacy door. Can't see mouths. Don't know sounds.`

That sentence set the limits of the reenactment. When a limit appears, testimony doesn't weaken. It gets more exact.

14:12, Oh Sejin put on a white coat and stood at the end of the corridor.

Putting him up as the one to reenact the crime wasn't easy. He stood with both hands clasped in front of him. The tremor was smaller than before. I didn't decide whether the smallness meant recovery or resignation. What we needed today wasn't feeling, it was sight.

"Just the movement, nothing else."

Gang Taejun said.

"The medicine cabinet stays closed. Keep your hands where we can see them."

Oh Sejin nodded.

"This isn't a treatment procedure, it's a movement check."

He was reducing risk with clinical language again. But this time the words weren't only defense. We had no intention of explaining any harmful function either. Door, direction, sightline. Those three were enough.

Go Yura prepared the broadcast log. The central broadcast could run 63 seconds late. The cafeteria's ceiling speaker was tied to the central network. Noeul couldn't hear the speaker. So the broadcast time had to be supplemented not by Noeul's testimony but by Go Yura's log.

"The first reenactment runs on the central timestamp as is."

Go Yura said.

"The second gets the 63 second correction. The third goes by the independent clock only."

Mun Rahee stood off to the side as an observer. He didn't look at the small watch on his wrist. I noticed that he didn't look at it, too.

Oh Sejin walked.

The white coat touched the glass before the actual person did. A sleeve appeared on the black surface, and a shoulder followed behind it. The pharmacy door handle moved inside the reflection. In the real corridor, Oh Sejin's body still didn't look like it had fully reached the door. The glass was a beat ahead. More precisely, the path our eyes traveled was different.

The 08:12 announcement recording played from the ceiling speaker. The actual time was 14:13, but the recorded phrase stayed the same as the past. Noeul didn't react to the sound. Instead he pointed a finger at the shoulder position visible in the glass.

`Coat visible before the broadcast.`

Go Yura logged it.

The first reenactment matched the memory from chapter one. But memory isn't evidence.

For the second reenactment, we played the central network 63 seconds late. This time the announcement phrase came later. The white coat showed up even earlier in comparison. Oh Sejin hadn't moved because he heard the broadcast. At the very least, the first moment he touched the pharmacy door came before the broadcast.

"Does that mean he went in before the official CCTV time?"

I asked.

Go Yura didn't answer right away. She waited for the third reenactment. On the independent clock, the moment Oh Sejin's hand touched the door handle, the camera recorded 08:13:02. Converting the central broadcast log's `08:12:00` to the independent standard gave 08:13:03. A difference of one second.

Looking only at the central display, the two events fell within the same minute. Once the standards were aligned, the coat came first.

"It's not a meaning, it's a record."

Go Yura said.

"Dr. Oh Sejin wasn't at the pharmacy door right after the official 08:12 broadcast. He was there from 08:13:02 on the independent standard."

Oh Sejin didn't close his eyes. As if he knew that closing them might make his guilt look smaller, he kept looking at the glass.

"Was it the same that day?"

Gang Taejun asked.

"It's highly likely."

Oh Sejin didn't state it as fact. It could have been a statement meant to protect himself, or his memory could genuinely be uncertain. We decided to keep possibility and confirmation separate.

Noeul held out his handheld device.

`Three rows of cups that day. Three rows today. Same glass angle. Coat first that day. Broadcast after.`

The sentence was short. It was short enough that there was nothing left to cut.

Gang Taejun entered Noeul's sentence into the official statement as is. He also attached a separate translated version with the interpreter noted. He didn't delete Noeul's original. It was a measure so that no one could later push it aside as "a loose paraphrase."

Baek Somyeong had been holding his camera and lowered the lens.

"Can I film this?"

"Not yet."

Gang Taejun said.

Baek Somyeong swallowed his complaint. This time the sound of swallowing wasn't recorded. It was something Noeul couldn't see.

14:50, Go Yura matched the silent segment of the chapter one cafeteria footage against the broadcast log.

There was no sound in the footage. But when the ceiling speaker turned on, the lighting flickered faintly. It ran through the same distribution panel as the power line. Go Yura marked that flicker. The soundless electrical tremor filled in what Noeul's testimony, unable to perceive audio, could not. Technology didn't replace the person. The person filled in a line technology alone couldn't see.

"0.8 seconds before the 08:12 broadcast starts."

Go Yura said.

"The white coat's reflection enters."

Oh Sejin heard the number and looked down at his hand. He wasn't looking at a label. He was looking at the direction of his own hand. I looked too. His left thumb curled inward. It was the same small habit as when he turned a cartridge in the infirmary.

"Don't use that hand."

Gang Taejun said.

Oh Sejin opened his hand.

"It was unconscious."

"That's exactly why we record it."

The excuse wasn't erased. It stayed attached right next to the record.

15:05, we ran the same reenactment once more without Noeul.

Noeul didn't ask why. Even knowing this was a reenactment he'd been left out of, he stood by the door anyway. This time Go Yura deliberately set the middle row of cups slightly askew. The reflection angle shifted by two centimeters. The white coat still showed up first, but the pharmacy door handle no longer appeared.

Go Yura said.

"That means what Mr. Noeul saw wasn't just some general impression. The cup position, where he stands, the glass angle all have to line up for the handle to be visible at all."

Noeul wrote on his device.

`The spot I always keep set. That's why I could see it.`

The sentence wasn't a boast. It was the moment repetitive labor became evidence. The row of cups that everyone had walked past as background had become the fixed point that anchored a line of sight. Looking at that row, I thought back to the cafeteria in chapter one. Back then I hadn't noticed the taste of the coffee or the position of the cups. The evidence had already been laid out before I ever saw the body.

Baek Somyeong raised his camera again, then lowered it.

"So we should really cover Mr. Noeul's daily movements first."

Noeul answered on the screen.

`Not coverage. Record.`

This time Baek Somyeong nodded right away. The reporter's lens learned a beat late. Turning a person into a picture makes testimony disappear. Noeul corrected his own position from a picture into a fixed point.

15:12, Gang Taejun asked Oh Sejin to walk the same route one last time.

This time nothing was in the white coat's front pocket. There were no papers in his hands. Oh Sejin stopped at the door, and before gripping the handle, he opened his hand for one second. In the glass, that one second stretched out long.

It was the same hand that had turned labels to face the storage direction. But the same habit doesn't prove the same crime. So Go Yura saved the file under `hand_habit_reference`. Not a crime file, but a reference for habit.

"Why divide it up like this?"

Oh Sejin asked.

"So we don't later pile on something you didn't do."

Go Yura said.

Oh Sejin had no answer. His excuses usually moved in the direction of shrinking himself. But when someone said they wouldn't pile on what he hadn't done, he couldn't use even that as a defense. A fair record sometimes silences the suspect more than an unfair one would.

The reenactment fixed the time Oh Sejin entered the pharmacy. The gain from that wasn't small. What had been background on the first day was now the movement of a first hand. The theory that Oh Sejin acted alone had weakened, but his hand hadn't blurred. Finding a second hand doesn't clear the first one.

15:20, Noeul wrote the last line of his statement himself.

`I didn't hear a sound. I saw the coat in the glass first. I couldn't see the shape of any mouth.`

Gang Taejun didn't underline that line. The moment you underline something, some words become important and others become less important. Instead he copied it exactly as written. Noeul's name entered the official investigation record for the first time. The man who used to just tidy up the background had become a witness to it.

Noeul rested his hand next to his own name for a moment. His expression didn't change much. What he wanted wasn't to be moved. It was a voice. A voice that enters quietly tends to stay longer.

15:40, we zoomed in on the back of the glass reflection.

The coffee machine's black surface hadn't only reflected the white coat. Behind the coat, between the doorframe and the refrigerator handle, a hand appeared very briefly. No face. Just a wrist and fingers. A habit of pinching a document envelope between the index and middle finger. It was the same way Lee Juwan flipped through files at the legal audit office.

"That looks like Lee Juwan's hand."

Go Yura said.

Gang Taejun shook his head right away.

"We keep 'looks like' separate from 'confirmed.'"

"Right. It looks like it."

Go Yura labeled the file `possible_LJW_hand`. A possibility. Not a confirmation. That distinction is what keeps a lead alive.

When we called Lee Juwan in, he held out his hand first.

"Go ahead and compare. Though the shape of a hand is a candidate, not evidence."

He said the thing in his own favor before we could. Gang Taejun didn't take his hand. Instead he handed him the same kind of document envelope.

Lee Juwan pinched the envelope between his index and middle finger. It looked similar to the hand in the reflection. Similar enough to be dangerous. Similarity makes people believe too quickly.

"Were you behind the cafeteria that day?"

Gang Taejun asked.

"I might have been. It's on the way from the legal audit office to the meeting room."

"Why isn't it in the record?"

"That route doesn't scan the central access tag. The cafeteria is a shared zone."

Go Yura pulled up the shared zone movement log right away. There was no tag, but there was one failed vending machine payment log. Central display 08:11:42. Legal department card. User: Lee Juwan. Failure reason: communication delay.

He said he didn't remember using the vending machine. Not remembering isn't innocence. But a failed payment log isn't a pharmacy access log either. We'd pulled him as far as the back of the cafeteria, and that's where we had to stop. Pushing further turns a lead into greed.

Go Yura added two more lines beside the hand lead. `Movement: possibly behind the cafeteria.` `Action: entry into the pharmacy unconfirmed.` She didn't put an arrow between the two lines. The moment you add an arrow, readers believe there's a path. For now there were only two dots.

Gang Taejun had those two dots placed in a separate envelope. So they wouldn't mix with Oh Sejin's white coat envelope. Two hands appearing in one scene doesn't make them the same act. Separating the envelopes slowed the pace of our reasoning this time. Slowing down is what keeps the next question from falling apart.

"So the hand possibility goes up."

I said.

Lee Juwan raised his eyebrows slightly.

"The possibility goes up. It doesn't mean I went into the pharmacy."

"That's how we'll record it."

Gang Taejun answered.

The hand had been behind the cafeteria, not inside the pharmacy. Even so, Oh Sejin wasn't the only one in the background on the first day. Lee Juwan couldn't take his hand back. And we still hadn't attached a charge to that hand either.

I looked at the hand in the reflection again. In front of Oh Sejin's white coat, or perhaps behind it, Lee Juwan's hand had been there. Whether that hand had opened the pharmacy, moved an envelope, or simply passed through, we still didn't know. But the cafeteria on the first day was no longer just a cafeteria. It was a mirror, and a mirror doesn't reflect only one person.

Noeul looked at the screen and typed.

`Didn't see that hand that day. It was in the glass.`

What went unseen and what stayed on record. Both were true.

I wrote in the ledger.

`08:13:02 by independent standard, Oh Sejin at the pharmacy door.`

`White coat reflection appears before the 08:12 broadcast.`

`Hand behind the reflection: possibly Lee Juwan, confirmation needed.`

The first hand was fixed in place. The hand behind it was still floating. The black glass went quiet again, like a screen switched off. But on that quiet surface, we had seen one more person than before.