I found a jacket that remembers a missing girl, and it’s rewriting my body one day at a time. Now I have to solve that girl's murder before the coat finishes its work and I disappear into someone else’s life.

I gave it three days and three windows and I built the test to fail.

That is not hindsight. I knew what I was doing while I was doing it. If you want a test to come back the way you want it, you control the conditions, and I controlled every condition I could think of, and I want to be honest that the reason I controlled them was so that the answer would be the glass.

Monday, the bus stop at Twentieth and Downing. New glass, four years old, flat as a table, no wave in it at all. Overcast at about eleven in the morning, which is the flattest light there is — no source, no shadow, nothing coming up from underneath. And I was in the sweatshirt, because I did the coat separately, on purpose, so that the collar could not be the reason.

The jaw was wrong.

I sat there for a while. There was a woman on the bench with a wheeled cart and she thought I was waiting for the 15 and after the second one went by without me getting on she stopped looking over.

Wednesday, the vestibule of the bank on Twentieth, which has an interior glass door, so you get a dim reflection against a lit room, which is the opposite condition. Different light source, different depth, different everything. I went in at four in the afternoon and pretended to be reading the rate sheet.

The jaw was wrong.

Thursday I went eleven blocks in the wrong direction, out past the park, to a stretch I have no reason to be on, because I had gotten it into my head that it was something about the neighborhood, which is not a thought, that is a sound a brain makes at three in the morning. There is a laundromat out there. Fluorescent overhead, which is the cruelest light on earth, straight down from directly above, and I put myself under it and looked at a plate-glass window at nine at night with the whole street black behind it.

And it was the clearest of the three, and the jaw was wrong.

Here is what wrong means, because I have had to get precise about it. It is not swelling. Swelling is soft and it is on top of something and you can feel it with a thumb. This was the line itself. The place where the jaw comes down from under the ear and turns toward the chin — the corner of it — was further forward and higher than the place I keep it, and the distance between the corner and the chin was shorter. The whole bottom of my face was smaller and it was set at a different angle, and there was no swelling, no tenderness, no heat, nothing to press on.

You could have put a photograph of me from September next to that window and I do not think a stranger would have said a word.

I would have. I have been looking at that face on purpose, every day, for ten years, the way you look at a load-bearing wall.

I wrote none of it down. Three days, three windows, and I did not write down a single thing, and if you had asked me why I would have said I did not have paper on me, and that would have been a lie, because I always have paper on me.

Friday morning I woke up before it was light with my jaw against the pillow and it was the pressure that woke me, not the alarm. The point of contact had moved. It was maybe an inch and a half in front of where it goes. I lay there in the dark with my eyes shut doing the only test available at that hour, which was to run my tongue along the inside of my own back teeth, and they were where they always are, and they did not help me at all.

Then I got up, and got into the chair, and went eleven feet to the bathroom, and my hands were wrong on the rims.

This is the one I could not put anywhere.

A push is a specific thing. You catch the rim at about ten o'clock, you drive down and forward through the bottom of the arc, and you let go at about two, and where you let go and where you catch again is a groove you wear into yourself over three years until it is as automatic as walking was. I know exactly where my hand meets that rim. I know it the way you know the last stair.

That morning I was catching short. Not by much. By enough that on the second push I overcorrected and put my knuckle into the tire and got a black stripe across it, and I have not done that since the first six weeks.

So I sat in the bathroom and looked at my hands for a while, which told me nothing, because they were my hands.

And I thought: all right. This is a thing you go to a doctor for.

I want to walk through what happened in my head over the next four or five minutes, because I have gone back to it a lot, and because at the end of it I did nothing, and I think the reason matters.

I have a clinic. It is the one everybody in the building uses. I could get in within two weeks and it would cost me nothing at the counter.

The problem is what I would have to say when I got there.

Because the sentence is not my hands hurt or I have been dizzy. The sentence is the shape of my face is changing. I would be saying it in a room, to a person with a laptop, and I would be a twenty-four-year-old man with no family listed on the intake, a disability, a housing voucher, and no swelling, no fever, no pain, and nothing whatsoever to point at.

I know what that sentence gets you. It does not get you an endocrine panel. It gets you a very kind person asking whether you have been sleeping, and whether you live alone, and whether you have anybody who can come in with you, and then a note in a file.

And the note travels. It is not the doctor. The doctor is fine, the doctor is going home at six. It is that a note about a young man alone in subsidized housing who reports that his face is changing goes into a record a hearing officer can be handed eighteen months from now, in a room where I am trying to keep an apartment.

And under all of that, the other thing, which I did not even let myself get to in a straight line.

Being examined is being looked at by a stranger who is allowed to write down what they see. I have organized my entire life — every shirt, every haircut, every doorway I go through, every single thing since I was fourteen — around not being looked at by a stranger who is allowed to write down what they see.

So there was no second opinion. There was nobody in Denver I could show this to who would not, in the process of helping me, put it on paper.

Which left one person, and I had already watched Laura Watson close a book and say okay.

I got dressed, and I went out, and I told myself I was going for the warm room.

Laura teaches a class on Fridays at six at the community college and the wardrobe room is empty from about five thirty.

I let myself in the loading door with my hip against the bar and went down the hall past the shop and the room was dark and the space heater was off and the whole place smelled like pressing cloth going cold.

Her tapes hang on a nail over the bench. There are four of them, and three are the fiberglass ones the volunteers use, and one is the old cloth one that is hers, that she has had for thirty years, that is soft as a ribbon and has the numbers half worn off at the twelve-inch mark.

I took the cloth one.

I want to be clear that I know what I did. I took a thing out of a room I had been let into. I did not leave a note. I sat there for a minute with it in my hand and I did not do it because I could not have asked, I did it because asking meant explaining, and I had just spent an hour proving to myself that there is nobody I can explain this to, and Laura was two miles away in a classroom and would have said yes in a quarter of a second.

Then I got the notebook out of my bag — the small one, the one I keep for appointment dates — and turned to the back, which was blank, and started.

I had to build the method as I went. You cannot measure your own jaw. There is no way to hold a tape at two points on your own face and read it. What I ended up with was the mirror over the bench, which is at sitting height because it is for fittings, and a pin from the cushion set in the seam of the collar as a fixed mark, and then measuring from the pin. It is a bad method. It is repeatable, which is the only thing that matters.

I did the jaw, corner to point, both sides. I did across the shoulders, which took three tries and which I am not confident in. I did my hand — wrist crease to the tip of the middle finger, which anybody can do accurately, which is why I started with it and should have started with it three days earlier. I did the span across the knuckles. I did the wrist.

Then I wrote it all down in a column with the date at the top, and then I sat and looked at it.

It was a strange feeling. Nothing about my situation was one bit better than it had been at six o'clock. I had eight numbers on a page and no idea what any of them meant, and no earlier numbers to compare them to except one shoulder measurement from April that belonged to somebody else's tape and one from Saturday that was in Laura's book and not in mine.

But it was a document. That is all it was and that turned out to be enough. For nine days this had been a thing that was happening to me in windows, and now it was eight numbers and a date, and next week there would be eight more numbers and another date, and either the numbers would move or they would not.

I put no theory on the page. No guesses, no maybes, nothing about the coat, nothing about anything. Just the date, the numbers, and three words at the bottom: hands catching short.

That is the closest I have ever come to being a scientist and it lasted about six hours.

I did the second set at two in the morning at my own kitchen table because I wanted to know how much of the variation was me and how much was the method.

The building at two is quieter than people think. The elevator does not run. What you get is the boiler somewhere under everything, and a car on Cleveland every ninety seconds or so, and Oriole's refrigerator through the wall, which cycles on a nine-minute clock that I know better than my own.

I had the tape and the notebook and the pen and one light on over the stove.

I did the hand first because it is the easy one, and I wrote it down, and it was the same, and I felt the whole thing lift off me about a quarter inch.

Then I put the tape against the pin in my collar and looked up into the little mirror I had propped against the sugar.

And the room went.

I did not see a stairwell the way you see a picture. I was in a stairwell. It was cold in a way my apartment was not, a damp cold, moving, with air coming from below. Painted cinderblock, gray-green, a color that has not been made since about 1974. There was a metal handrail worn back to steel in patches, and the patches were in a rhythm, the way a rail wears when the same hand goes down it, and I knew , completely, with no reason, that they were going down and not up.

And there was a door at the bottom, and the door had a bad handle. That is the detail I got and kept. Not broken. Bad. The lever sat about fifteen degrees below level, tired, the way a handle goes when the spring has gone soft, so that it hangs and you have to lift it before you can push it down. I have opened nine thousand doors and I could have picked that handle out of a hundred.

And a woman said a name.

She said it right beside me, at conversational volume, slightly amused, the way you say a name you have said many times, not calling out, not urgent. Two words. It had a shape to it, and the second one was longer than the first, and I heard it as clearly as I have ever heard anything in my life.

And I could not keep it. It was going while she was still saying it, the way the middle of a dream goes while you are telling somebody the beginning.

Then I was at my table with the light on over the stove and Oriole's refrigerator running and my heart going hard enough that I could feel it in the hand holding the pen.

The pen was moving.

I looked down at it and my hand was still going, the last of a stroke, and it came off the paper on its own.

I sat back.

The list was where I left it. Date at the top, the hand measurement, a gap where the jaw was going to go.

And under the gap, in my handwriting, in my pen, three words:

not that door

I looked at that for a long time. Long enough that the refrigerator went off and came back on.

Then I did the only thing I know how to do, which is that I started building the reasons.

I had been up since before five, on almost nothing. It was two in the morning and I was in a cold room staring into a mirror at my own face, which is a thing people have induced hallucinations with on purpose for four hundred years — Laura has a whole story about a lighting designer and a hotel bathroom. There is a whole category of it, the state right before sleep, where people see rooms and hear voices and it means nothing. And people write things they do not remember writing. You write a grocery list half asleep, you find it in the morning, it is yours.

All of that is true. Every item on that list was correct and I have no argument with any of it today.

I sat at that table until the sky started going. The coat was on the back of the chair four feet away, where it had been since Saturday, and in two and a half hours it did not once occur to me to think about the coat.

That is the part I cannot explain.