Marcus pushed his cart down the third-floor hallway of Building C. The wheels needed oil. They'd needed oil for three months, but he hadn't said anything to Dwayne about it. The squeak had become something like company during the long nights.
It was Tuesday, which meant the chemistry labs. He liked Tuesdays. The labs were usually empty except for a few graduate students who'd nod at him without really seeing him. That was fine. He'd key into each room, empty the trash, mop if it needed it, check that the gas valves were closed. Simple work. Clean work.
The old darkroom was at the end of the hall. They'd stopped teaching film photography five years ago, maybe six. The college kept saying they'd convert it to office space, but budgets were tight. Marcus was supposed to check it once a month, make sure there were no leaks, no pests. He'd checked it last week, but tonight the door was slightly open. Just a crack. Could've been the building settling. These old buildings did that.
He pushed the door with his shoulder. The red safety light was on, casting everything in that strange underwater glow he remembered from high school photography class. Someone had been here. Recently. The sink was damp. There was a faint smell of soap, the cheap kind from the dispensers in the public bathrooms.
On the counter, folded neat as you please, was a towel. Not a school towel. A regular bath towel, green, worn thin in places. Next to it, a travel-sized bottle of shampoo, the kind you get from hotels. Marcus stood there for a long moment, looking at these things.
He backed out, closed the door. Kept pushing his squeaky cart down the hall.
The next night, he brought an extra sandwich from home. Turkey and swiss, nothing fancy. Left it on the counter in the darkroom, still in its ziplock bag. Didn't leave a note. When he came back Thursday, the bag was washed and dried, sitting where he'd left the sandwich.
This went on for two weeks. He'd leave food—sometimes a sandwich, sometimes an apple, once a container of leftover pasta his sister had brought him. Each time, the container or bag would be returned, clean. The darkroom started to smell less like chemicals and more like the lemony cleaner he used in the classrooms. Someone was taking care of it.
Marcus had been divorced for eight months. The apartment in Mesa was too quiet, so he'd switched to nights. Told Dwayne it was for the shift differential, an extra dollar-fifty an hour. Dwayne had clapped him on the back, said it was smart thinking. But it wasn't about the money. It was about having somewhere to be when the walls started closing in.
Three weeks in, Marcus arrived to find a note. Careful handwriting on a piece of notebook paper: "Thank you." Nothing else. He folded it, put it in his shirt pocket. That night he left a thermos of coffee along with a ham and cheese on wheat.
He started paying attention to the little things. A toothbrush appeared by the sink, hidden behind the developing trays. A small reading light, battery-powered, tucked under the counter. A stack of library books—chemistry texts, mostly, but also a novel or two. Whoever it was, they were careful. Everything could be hidden quickly, made to look like it had always been there.
One night in November, Marcus was running late. His sister had called about their mother, who wasn't doing well. Assisted living was expensive. They'd have to sell the house in Tucson. By the time he got to Building C, it was past midnight.
Campus security was doing rounds. He saw their golf cart parked outside. His chest tightened. He pushed his cart faster, the squeak echoing in the empty hallway. The security guard, a kid named Trevor who couldn't be more than twenty-two, was standing outside the darkroom.
"Hey, Marcus," Trevor said. "You ever use this room?"
"Check it once a month," Marcus said. His voice came out steady. "Why?"
"Thought I saw a light. Probably nothing."
Marcus pulled out his keys, made a show of looking for the right one. "I'll take a look. Might be an electrical problem."
Trevor shrugged, already losing interest. "Sure. Have a good one."
Marcus waited until he heard the golf cart drive away. Then he knocked, very quietly, on the darkroom door. Three taps. A pause. Three more.
The door opened. The woman standing there was maybe fifty, Asian, wearing a maintenance jumpsuit that didn't quite fit. She had the kind of careful posture that suggested she'd once stood in front of classrooms.
"I'm sorry," she said.
"Don't," Marcus said. "Just be more careful with the light."
She nodded. They stood there for a moment, neither knowing what to say.
"I used to teach here," she said finally. "Chemistry. Nine years."
Marcus knew better than to ask what happened. Adjuncts. They were always the first to go when budgets got cut.
"The coffee," she said. "It's very good. Thank you."
"It's just Folgers."
"Still."
He wanted to ask her name, but that seemed like crossing a line. Instead, he said, "Security doesn't usually come by on Thursdays."
She understood. "Thursdays. Okay."
Marcus went back to his cart, continued down the hall. When he looked back, the door was closed, no light visible. Good.
Her name was Yuki. He learned this not because she told him, but because he found a prescription bottle in the trash one night, half-hidden under paper towels. Yuki Tanaka. The medication was for anxiety. He buried it deeper in the bag, made sure it wouldn't be visible to anyone else.
December came with its peculiar Phoenix chill, not real cold but enough to make the nights uncomfortable. Marcus brought a sleeping bag he'd found at Goodwill, left it rolled up in the darkroom's storage cabinet. It disappeared, then reappeared each morning, packed so tight it looked like it had never been used.
They developed a rhythm. He'd leave food, she'd leave notes. Small things: "The second floor bathroom has a leak." "Someone left a window open in 203." "Thank you for the soup."
Once, she left a longer note: "I published a paper once on silver halide crystals. The same chemistry as old photographs. Transform light into memory. Seems appropriate."
Marcus didn't know how to respond to that, so he didn't. But the next night he brought a book he'd had since community college, a collection of Walker Evans photographs. Left it with a banana and a bottle of water. The book stayed. Sometimes he'd find it moved, a different page left open.
Dwayne started asking questions in January. Not suspicious, just curious.
"You're looking tired, buddy," he said one morning as Marcus was clocking out. "Everything okay?"
"Fine," Marcus said. "Just not sleeping well."
"This job," Dwayne said, shaking his head. "It gets to you, being alone all night. You need anything, you let me know."
Marcus nodded, gathered his things. In his lunch bag was a note from Yuki: "The hot plate in the old faculty lounge still works. Made tea. Left you some in the red thermos."
He found the thermos that night, filled with green tea. It was still warm. He drank it while mopping the second-floor hallway, thinking about transformation, about light becoming memory, about the things we do to survive that we never tell anyone.
February brought the news everyone had been expecting. The college got a grant. Building C would be renovated over the summer. New offices, new labs. They'd gut everything, Dwayne said, excited about the overtime it would mean.
Marcus left a note for the first time: "Building renovation. Summer. You need to know."
Her response came the next night: "I know. I've been applying for jobs. Nothing yet."
He wanted to write more, to say something useful, but what was there? He wasn't a man who fixed things, not anymore. He just cleaned them.
March arrived with unexpected rain. The roof leaked in several places, and Marcus spent his nights placing buckets, emptying them, placing them again. The darkroom stayed dry, something Yuki noted in neat handwriting: "No leaks here. Small miracles."
She started leaving things for him. Tea, always. Once, a sandwich—peanut butter and honey, cut diagonally. A poem copied from one of her library books. "You might like this," she wrote. It was about work, about hands, about the dignity of repetitive tasks. He did like it. He kept it in his wallet.
One night he arrived to find campus security in the building. Not Trevor, but an older guard, someone who actually paid attention. Marcus went about his work, tried to look normal. When he got to the darkroom, he didn't knock. He couldn't. He just stood outside for a moment, then moved on.
The next night, Yuki's note said: "I hid in the supply closet. Could hear you outside. Your cart really does need oil."
He laughed, surprising himself. It had been months since he'd laughed at something.
April was when it started to unravel. The college hired contractors to assess the building. They came at odd hours, taking measurements, photos. Marcus would arrive to find doors open that should have been locked, lights on in rooms that had been dark for years.
"It's getting difficult," Yuki wrote.
"I know," he wrote back.
"I might have a job," she wrote a week later. "Lab technician. Graveyard shift at a hospital. The irony."
Marcus felt something in his chest, a tightness that wasn't quite sadness. "That's good," he wrote.
"Is it?" she wrote back.
He didn't answer that one.
May came hot and early. The building's air conditioning struggled, then failed entirely. Maintenance said they wouldn't fix it, not with the renovation coming. Marcus sweated through his shirts, had to bring extras. He'd find Yuki's towel damp in the mornings, knew she was suffering too.
"Two more weeks," she wrote.
"Yeah," he wrote back.
The last week of May, Marcus brought dinner. Real dinner. Chinese takeout from a place his wife—ex-wife—used to like. He knocked on the darkroom door, the pattern they'd established.
Yuki opened it immediately. She was wearing regular clothes, jeans and a Phoenix Suns t-shirt that was too big for her.
"I thought," Marcus said, then stopped. "I don't know what I thought."
"It's okay," she said. She stepped aside.
They ate in the red light, sitting on the floor, backs against the wall. The kung pao chicken was too spicy, but neither complained.
"I want to thank you," Yuki said.
"Don't."
"I need to."
Marcus shook his head. "We did what we did."
She smiled, small and sad. "Very American. Very pragmatic."
"I guess."
"In Japan," she said, "there's a concept. Okurimono. It means gift, but more than that. A gift that acknowledges the relationship between giver and receiver. The web between people."
"We don't have a relationship," Marcus said, not unkind, just factual.
"No," she agreed. "We don't."
They finished eating in silence. Marcus gathered the containers, the plastic forks.
"I start the hospital job Monday," she said.
"Good."
"I'll be gone by Friday."
"Okay."
He stood to leave. At the door, she said, "Marcus."
It was the first time she'd said his name. He turned.
"The cart," she said. "You should oil it. For your own sake."
He nodded, left. The squeak followed him down the hall.
Friday night, the darkroom was empty. Clean. Cleaner than it had been in years. The developing trays were stacked neatly. The enlargers were covered. The chemicals were organized. It looked like a room waiting to be useful again, or waiting to be destroyed. Hard to tell the difference.
On the counter was his thermos, the one he'd been leaving coffee in. Next to it, a note:
"The transformation is complete. Light into memory. Thank you for not seeing me."
Marcus took the thermos, left the note. Someone would find it during renovation, wonder what it meant, throw it away.
He finished his shift, clocked out as the sun was coming up. Dwayne was already there, excited about the overtime summer would bring.
"Hey," Dwayne said. "Finally got around to it."
He held up a can of WD-40, grinning.
"Your cart, man. Fixed that squeak. Drove me crazy every time I heard it."
Marcus nodded. "Thanks."
He drove home to his apartment in Mesa. The morning traffic was starting to build. He thought about making breakfast but went to bed instead. The room was bright despite the blackout curtains. He lay there thinking about transformation, about light and memory, about the things we do to survive.
The next week, they started gutting Building C. Marcus was reassigned to the library, same shift, same pay. It was fine. The library had its own rhythms, its own hiding places, its own small emergencies.
Sometimes, rarely, he'd see someone at the hospital when he took his mother for her appointments. A glimpse of a woman in scrubs, hair pulled back, moving with purpose down a hallway. Could have been anyone. Probably was.
He never fixed the squeak in the library cart. Told himself he'd get around to it, but never did. The sound kept him company through the long nights, a reminder of something he couldn't quite name. Something about kindness, about recognition, about the space between seeing and not seeing.
About survival, and what we owe each other in the dark.
The darkroom was converted to three small offices by August. Faculty offices, not adjunct. The kind with windows, with nameplates on the doors. Marcus cleaned them twice a week. They smelled like fresh paint and new carpet. No trace of chemicals, of red light, of the careful existence someone had carved out in that space.
But sometimes, wiping down the desks or emptying the waste baskets, Marcus would remember the green tea, still warm in the thermos. The neat handwriting. The folded towel. The way she'd said his name, just once, like it was something worth knowing.
He'd remember, then go back to work. There was always work. The trash accumulated. The floors got dirty. The bathrooms needed attention. Simple work. Necessary work. The kind that nobody notices until it doesn't get done.
The kind of work that keeps the world running, one squeaky cart at a time.