The morning sun crested the western rim of Valles Marineris and turned the reinforced glass of Greenhouse Seven into a slab of molten copper.
Vera Okonkwo stood barefoot in the second planting row, the regolith warm between her toes, her fingers buried to the second knuckle in dark substrate. She was coaxing Earth jasmine, a stubborn varietal that had refused every prior attempt, into a tentative partnership with Martian soil. The plant's first bloom, a single white star no larger than a thumbnail, trembled at the end of a thin green stem.
"Patience," she murmured to the flower, though the word was meant for herself.
Behind her, the monitoring station cycled through its routine. Three flat panels displayed cascading rivers of data. The bottom screen flickered. A pale blue line, flat and stable for eleven hours, registered its first deviation. Vera did not turn. She recognized that particular flicker in her peripheral vision the way her grandmother had recognized the creak of a certain floorboard in their house in Lagos.
The heliotropes were speaking again.
She rose slowly, brushing red-brown dust from her knees, and walked to the console. Numbers arranged themselves in rows across the screen, unremarkable to anyone without her training, but Vera read them the way the old women of her childhood had read the patterns in cassava leaves. A spike. A fall. A rhythm that had nothing to do with the planet's geology and everything to do with something buried deeper, something the first survey crew had mapped and promptly tried to forget.
The cave system beneath Valles Marineris held an anomaly the colony leadership did not discuss in official briefings. The heliotrope crystals down there pulsed at intervals no natural formation should pulse. They were not alive, exactly. They were something else. Vera had been sent to study them three years ago as a side assignment to her primary research, and she had filed seventeen polite reports, none of which had managed to capture what she actually felt when she descended into the lower galleries and stood among them.
The blue line on the monitor climbed another notch.
She pressed her thumb to the confirm pad and recorded the timestamp: 0641, Mars standard, sol 418. The fluctuation was within parameters. Marginally. But it was the third such fluctuation in nine sols, and the prior two had corresponded with microseismic events the geologists had dismissed as routine thermal settling.
Vera did not believe in coincidence.
She turned from the console and crossed back to the jasmine. The single white bloom had opened another fraction since she had last looked, its petals fanning outward as if to catch light it could not possibly need. In the controlled humidity of the greenhouse dome, with its engineered day-night cycle and its carefully calibrated nutrient mist, the flower was performing a small miracle. On Earth, jasmine responded to bees, to wind, to the slow turning of seasons. Here, it responded only to Vera's attention.
She touched a fingertip to the base of the bloom and felt nothing in particular, which was itself a discovery. On Earth, the same touch would have carried trace electrical charge from the plant's vascular system. Here, the charge was different. Fainter, but pitched higher. As if the jasmine were trying to speak in a register Vera could not quite hear.
A pressure change in the dome's outer seal made her lift her head.
The main airlock cycled with a low pneumatic hiss, and the interior lights adjusted automatically to compensate for the new arrival's shadow. A figure stepped through the inner hatch, helmet already unsealed and tucked under one arm. He was tall, broad through the shoulders, and moved with the careful economy of someone who had learned long ago that space did not forgive wasted motion.
Vera recognized him immediately. Everyone in the colony recognized Theo Marchetti by sight, even if half the colonists actively avoided conversation with him. He had arrived on the last supply shuttle, supposedly to write a long-form piece on the frontier research stations for an Earthside publication. Vera had read three of his previous pieces and had formed no firm opinion of him as a person. His sentences were clean. His eyes missed very little. His presence in the common areas tended to make the colony administrator sweat.
"Theo Marchetti," she said, straightening. "You are forty minutes early."
He stopped six paces from the planting row. "The shuttle manifest listed your block as starting at 0700."
"It does. But the jasmine does not consult manifests."
His mouth moved in a way that might have been the start of something. He did not finish it. Instead, he took in the dome with a single slow sweep of his gaze, the way a man inventories a room he has not yet decided to trust. The reinforced glass. The planting rows. The console with its gentle cascade of numbers. The single white bloom standing alone in the second row like a small flag planted in foreign territory.
"You sent the request yourself," he said. "Three weeks ago. The interview. I assumed it had been forwarded."
"It had. To your editor. To your agent. And, if I read the carbon trails correctly, to a colleague at a major publication who you owe a favor. It bounced around for a while."
He absorbed this without expression. "And now I am here."
"And now you are here. Forty minutes early. Which tells me either you were curious or you needed an excuse to leave your quarters."
A breath. A small recalibration of his posture. "I was curious."
"Good. Curiosity I can work with. Skepticism I can work with. What I cannot work with is someone who arrives already knowing what they intend to write."
Vera gestured him forward with a tilt of her chin. He approached the planting row and stopped again, this time close enough that she could see the fine dust on the shoulders of his grey pullover, the sort of dust that collected in the lower habitation levels where the air filters worked hardest. He had not been in the upper corridors. He had been somewhere else, somewhere that did not clean itself.
"The jasmine," she said, "is the point."
He looked at it. The single bloom swayed in the gentle artificial breeze of the dome's circulatory system. "One flower."
"One flower. Fourteen months of failed attempts before it. Two nutrient protocols abandoned. One complete restart of the substrate after I realized the problem was not chemical but vibrational." She paused.
"The vibrational frequency of the substrate," she continued, "was preventing root cellular differentiation. The jasmine could not form the vascular architecture it required to flower. It would grow. It would leaf. But it would not bloom. Not here. Not in any soil mixture I could formulate, until I began thinking about what the soil itself was made of."
Theo Marchetti had not looked away from the flower. His hands rested in his jacket pockets, and his shoulders were set at the particular angle of a man listening with his whole body. Vera recognized the posture from years of being interviewed herself, back when she was younger and her work on extremophile mosses had briefly attracted press attention. Journalists who listened like this usually wrote better pieces. They also remembered more.
"What is the substrate made of?" he asked.
"Minerals native to Valles Marineris. Pulverized and reconstituted. With a small percentage of imported organic matter." She tilted her head toward the planting row. "I can show you the geological analysis if you want. It is in the research log. Dr. Vasquez will have flagged the relevant sections."
"I would like to see them."
"She will grant you access. Eventually. After she has had her turn vetting your questions." A small smile touched Vera's mouth. "It is her way. She believes any interview with a member of this station is, by extension, an interview with the entire mission. She is not wrong."
Theo said nothing to this. He moved instead, a slow lateral step along the planting row, his boots leaving faint prints in the spilled mineral dust. Vera watched him and did not follow. There was a particular pleasure, she had learned, in watching a careful man move through her space. The way he checked his footing. The way he paused at each new planting tray as though reading the leaves the way one might read headlines.
"You have questions," she said.
"I have several."
"Then ask the obvious ones first. I am less patient with the indirect ones."
He turned back to her. The bloom swayed between them, its white petals almost luminous against the dim red light filtering through the dome's tinted panels. Up close, in this angle, she could see the faint scarring along his jawline that the lower light had concealed earlier. He had been hurt, sometime before his arrival on Mars. He had healed badly. She filed the observation away.
"How did you get the jasmine to bloom?" he asked.
"Patience. And a great deal of failure I would prefer not to recount in detail."
"You have recounted it in detail to someone."
"To myself. In my journal. That is different." She paused, weighing him. "I documented seventeen failed protocols. I will not give you the specific parameters because they are not yours to have. What I will tell you is that the breakthrough came from a question I had been asking the wrong way. I had been treating the substrate as a problem of chemistry. It was a problem of physics. The crystals in the regolith, when the plants were watered, were resonating at a frequency that interfered with the jasmin's flowering hormone cascade. Once I understood that, I changed the watering schedule. The resonance settled. The plant bloomed."
Theo was quiet for a moment. When he spoke, his voice had dropped half a register. "You said crystals."
"I did."
"What kind of crystals?"
"Local mineral formations. Mostly sulfates. There is a stratum in the deeper canyon walls that produces formations of considerable size. I took samples during one of the geological expeditions. They are in storage now. They were not, technically, sanctioned for botanical use." She let that land. "Dr. Vasquez knows. She chose not to raise an objection with the mission director."
"And the bloom?"
"The bloom happened."
He studied her for a long moment. She could see the calculation running behind his eyes, the sorting of facts into categories, the formation of a hypothesis he had not yet committed to. It was the look she had seen in graduate students when they began to suspect their advisor had been wrong about something fundamental.
"You are being careful with me," he said.
"Yes."
"Because you do not trust me."
"Because I do not know you yet." She gestured at the bloom. "This is the only jasmine on Mars. It has taken me fourteen months to produce it. I will not have its existence trivialized by someone who intends to make it a metaphor for something I did not intend."
"What if the metaphor is accurate?"
"Then I will consider it. After I have read your draft." She met his gaze without flinching. "You will show me your draft. That is a condition of your access."
A breath escaped him that might, in a less guarded man, have been a laugh. "You drive a hard bargain, Dr. Okonkwo."
"Vera."
"Vera." He inclined his head. "And you may call me Theo. If we are to be on a first-name basis while you extract concessions from me."
"We are to be on whatever terms I decide we are to be on, Mr. Marchetti."
He looked at her again. Something shifted in his expression, a faint recalibration of expectation. "You are not what I expected."
"What did you expect?"
"Someone more concerned with public perception. The mission profile emphasized cooperation with media."
"The mission profile emphasized cooperation with media that had been pre-approved." She turned back toward her workstation, signaling, without rudeness, that the interview's formal portion was drawing to a close. "You were not pre-approved. Dr. Vasquez made certain of that. Which suggests someone on the mission staff thought you were worth the trouble of resisting."
She heard him shift behind her. Heard the soft scrape of his boot against the metal walkway as he followed at a careful distance. Heard the breath he drew to ask his next question.
"What do you think that someone knows?"
"I think," Vera said, without turning, "that you should ask them."
She reached her workstation and pulled up the environmental monitoring display. The dome's atmospheric regulators hummed in the background, a sound so constant she usually did not notice it. Today she noticed it. Today every sound in the greenhouse seemed slightly louder, slightly more deliberate, as though the space itself were paying attention.
Behind her, Theo stood at the edge of the workstation's perimeter, honoring the implicit boundary she had drawn. Good. He understood boundaries. That was useful information.
"I will come back tomorrow," he said. "If that is acceptable."
"You will come back when Dr. Vasquez has cleared your access. Not before."
"Then I will see her this afternoon."
"You will." Vera allowed herself one final glance over her shoulder. "And Mr. Marchetti. When you do, do not tell her I am being difficult. She already knows. She takes a private satisfaction in it. If she learns I am doing it on purpose, she will start documenting my behavior for the mission psychologist."
The corner of his mouth twitched. He did not smile. But the architecture of his face softened, very slightly, around the eyes. "Understood."
He left. She watched his progress along the corridor until the curve of the dome took him from view, then turned back to the jasmine. The bloom swayed in its artificial breeze, indifferent to her scrutiny.
"You and I," she said to it, very quietly, "have a great deal of work to do."
She did not move for several minutes. Then she pulled the workstation chair closer and settled into it, drawing the keyboard toward her with both hands. The environmental display cycled through its standard array of metrics: temperature, humidity, substrate moisture, pH, light frequency. She watched the numbers tick upward in their accustomed rhythms. She was reaching for the next tab, the one that displayed the isotopic decay rates of the substrate samples, when her hand stopped.
The number on the screen was wrong.
She sat forward. Read it again. Reached for the calibration log. The number did not change. The isotopic decay rate of the sulfur-35 sample in tray twelve was running seventeen percent slower than the control sample in tray fourteen. The two samples had been drawn from the same stratum, prepared under identical conditions, and placed in the greenhouse on the same date. They should have been decaying at the same rate.
She stared at the screen. Pulled up the historical data for tray twelve. The anomaly had been present, in retrospect, for six days. She had not noticed because she had not been looking. She had been focused on the jasmine. She had been focused on Theo Marchetti. She had not been monitoring her own samples with the attention they deserved.
Her fingers found the journal file before her mind had fully committed to the decision. She opened a fresh entry. She typed in the observational data, the calibration references, the calculation of the variance. Seventeen percent. A factor of 1.7. The crystals in the substrate were, by every measurement available to her, altering the local rate of radioactive decay.
She did not know what that meant. She knew what it should not mean. It should not mean what a less disciplined scientist might immediately assume it meant, which was that the crystals were somehow altering local time, or bending some fundamental constant, or behaving in a way that contradicted every model she had been trained to trust. She knew the more likely explanations. Contamination. Calibration drift. A sensor malfunction she had not yet identified. Any of these would account for the discrepancy. None of them required her to record the data in a journal that was, by mission protocol, accessible to the supervising director.
She looked at the entry she had written. She looked at the journal header, which read OKONKWO RESEARCH LOG, CLASSIFICATION OPEN, in the small blocky type of the mission's archival system. Anything she entered here would be reviewed. Anything she entered here would be flagged. Dr. Helena Vasquez would read it. Dr. Helena Vasquez would form questions. Dr. Helena Vasquez would, with the best of intentions and the worst of timing, escalate those questions to the mission director.
And then the jasmine would be confiscated. The substrate would be quarantined. The crystals would be sent back to Earth on the next resupply shuttle, and fourteen months of work would become a footnote in a mission report that no one outside the program would ever read.
Vera closed the journal entry. She did not delete it. She copied it. She opened a secondary file, one she had created years ago for precisely this purpose, a private record kept under her personal encryption, off the mission's main server, stored on a portable drive she kept in the breast pocket of her work jacket. She pasted the entry into the secondary file. She added a single line of metadata. ANOMALY CONFIRMED. FURTHER OBSERVATION REQUIRED. DO NOT FLAG.
She closed the secondary file. She closed the workstation. She sat for a long moment in the humming quiet of the greenhouse, listening to the dome's circulatory system push its thin air through the planting rows, listening to the jasmine sway in its breeze, listening to nothing at all.
Then she stood, adjusted her sleeves, and went to check the moisture levels of the eastern planting trays.
The supply port at the base's southern perimeter was not a port in any terrestrial sense. There was no water. There was no horizon. There was only a pressurized hangar carved into the regolith, its airlock cycling open to receive the battered merchant shuttle that had requested permission to dock at 0947 hours local Mars time.
Theo Marchetti set the shuttle down on the marked pad with the care of a man who had piloted worse crates through worse weather and intended to fly this one out again, preferably intact. The hull creaked as the landing struts took the weight. Dust, fine and red, billowed against the viewports and then settled, leaving a thin rust-colored film on the glass that made the hangar lights look like distant suns through fog.
He killed the engines. The sudden silence was the loudest thing he had heard in three months.
"Shuttle Magellan, you are cleared for extended stay." The voice from the tower was crisp, professional, and entirely uninterested in his reasons. "Recalibration of navigation array acknowledged. Please file your revised departure estimate with the port authority within twenty-four hours."
"Copy that," Theo said into the comm, and clicked off before they could ask any follow-up questions. He did not have a revised departure estimate, because he did not intend to leave on any particular schedule. He intended to stay until he found what he had come to find, or until the mission director asked him to leave, whichever came first.
He pushed back from the console. The cockpit smelled of recycled air, stale coffee, and the particular staleness that accumulated in a small space after too many days without a proper shower. He had been in transit for eleven days from the Tycho crater depot, running cargo that paid for the fuel and nothing else, and his body was beginning to register complaints.
But the complaints could wait. The recalibration could not, because the recalibration did not exist.
Theo unbuckled his harness, stood, and stretched until his spine popped in three places. He was a lean man in his late forties, with dark hair going gray at the temples and the kind of face that looked better in shadow than in light. He wore a flight suit that had been repaired too many times, and his hands, when he flexed them, showed the scars of a career that had included more than its share of places where people tried to kill journalists for asking questions.
He had been a war correspondent once. He had covered the resource skirmishes in the asteroid belt. He had written the kind of long-form pieces that won awards and ended friendships and, eventually, ended his marriage. He had inherited the shuttle from a cousin who had died in a decompression accident and had spent the last five years running the kind of cargo that did not require too many questions.
He had not, technically, retired from journalism.
He had simply shifted his beat.
He opened the side hatch. The hangar's atmospheric seal accepted him with a soft pneumatic hiss, and the air that rushed in was colder than the shuttle's cabin, carrying the mineral tang of recycled oxygen and the faint, persistent smell of red dust that no filtration system could entirely remove. He stepped down onto the regolithcrete floor and felt his boots register the subtle difference in gravity.
Mars. He had been here three times before. Each time felt stranger than the last.
He made his way to the port authority office, where a young man in a base uniform was waiting with a tablet and the patient expression of someone who processed shuttle crews all day.
"Captain Marchetti," the clerk said. "Your cargo manifest shows agricultural supplies and one crate of university research equipment, priority delivery for the greenhouse division. The botanist has already been notified."
"Good," Theo said. "Where do I deliver the research equipment?"
"Greenhouse Seven, in the eastern habitat module. Dr. Okonkwo is expecting you. She'll sign for it personally."
Theo nodded. He took the tablet, signed where indicated, and handed it back.
"One more thing," he said, in the casual tone of a man asking about the weather. "Is the base director available? I'd like to pay my respects while I'm here. Been a while since I've been up this way, and I wanted to make sure I'm not stepping on any toes with the extended stay."
The clerk looked up, mildly surprised. "Director Webb is on the rotation. I can ping his office, but he's usually pretty busy."
"No rush," Theo said. "Just thought I'd ask."
He left the office and walked out into the base proper.
The habitat was a collection of pressurized modules connected by sealed corridors, all painted in the same off-white that no one had ever bothered to change. The corridors hummed with ventilation. The floors vibrated faintly with the distant pulse of the reactor. People in mission jackets moved past him with the purposeful drift of workers who had been here too long and had stopped noticing the walls.
Theo found the eastern module without difficulty. He found Greenhouse Seven at the end of a long corridor, its door marked with the small placard that read BOTANICAL RESEARCH, DIVISION 7, DR. V. OKONKWO, PRINCIPAL INVESTIGATOR.
He stopped outside the door. He did not knock, not yet. Instead, he stood for a moment, listening to the muffled sound of water circulating and the faint rustle of something growing.
He thought about the story he was chasing. He thought about the tip he had received, six weeks ago, from a source he trusted and could not name. The tip had been simple: there was something growing in the Valles Marineris greenhouse that did not match any known adaptive profile. Something that the mission was quietly monitoring. Something that had not yet appeared in any official report.
He had spent three months confirming the tip. He had spent three months arranging this delivery run specifically so that he could be the one to bring the research equipment to Greenhouse Seven. He had spent three months preparing questions that he could not yet ask, and lies that he could tell until he was ready to tell the truth.
He was not yet ready to tell the truth.
He raised his hand and knocked.
The door hissed open.
Vera Okonkwo stood on the other side, wiping soil from her hands onto the front of her work jacket. She was a tall woman, broad-shouldered, with close-cropped hair and eyes that had the habit of looking at people as if she were cataloging them for later reference. She had the particular stillness of someone who spent most of her time listening to plants grow.
"Captain Marchetti," she said. Her voice was warm, but measured, each word chosen with the care of someone who had learned early that the wrong word in the wrong place could change the shape of a life. "You're early."
"Traffic was light," Theo said.
She almost smiled. Almost. "Come in. The equipment goes on the cart."
He followed her into the greenhouse.
The dome rose above them like the inside of a cathedral, its transparent panels filtering the weak Martian sunlight into something that approximated noon. The air was thick and humid, tasting of soil and chlorophyll and the faintly metallic edge of the nutrient solutions that fed the planting trays. Rows of experimental cultivars stretched away in every direction, some familiar, some not. Theo caught the scent of something floral, something he could not immediately place, and the back of his neck prickled.
Jasmine. He was almost certain it was jasmine.
"Your shipment," Vera said, gesturing to a flatbed cart near the airlock. "I'll need to verify the contents against the manifest before I sign."
"Of course," Theo said. He was already moving toward the crates, but his eyes were cataloging the greenhouse, noting the positions of the cameras, noting the absence of certain cultivars where the official inventory said they should be, noting the small, almost invisible scorch marks on one of the substrate trays that suggested something had been tested recently and not entirely successfully.
He had been a journalist too long to miss details like that.
He opened the first crate. The equipment inside was standard botanical analysis gear, nothing remarkable, nothing that would draw a second look from anyone scanning the manifest. The second crate was similar. The third crate contained the agricultural supplies he had agreed to deliver as a cover, seeds and nutrients and a few replacement parts for the irrigation system.
He handed Vera the tablet. She scrolled through the manifest, her expression neutral, her fingers leaving faint smudges on the screen.
"This all checks out," she said. "I'll sign."
She signed. She handed the tablet back. Their fingers did not touch.
"Captain Marchetti," she said, still holding the tablet, "is there something else?"
He looked at her. He looked at the greenhouse. He looked at the faint, sweet smell of jasmine that seemed to be coming from a sealed tray near the eastern wall.
"Just curious," he said. "How are the adaptive species responding to the local conditions?"
"That's a broad question."
"I'm a broad kind of guy."
She studied him for a long moment. Her eyes were very dark, and very patient, and they gave nothing away.
"They're responding," she said. "As expected."
"Good to hear," Theo said.
He loaded the empty crates back onto his shuttle's cargo dolly. He did not ask another question. He did not need to. He had seen what he had come to see, and he had smelled what he had come to smell, and the story he had been chasing for three months was no longer a rumor.
It was a scent. It was a scorch mark. It was a botanist who had looked at him as if she knew exactly what he was and had decided, for reasons of her own, not to say so.
He left the greenhouse. He walked back through the corridors of the base. He made his way to the transient crew quarters that the port authority had assigned him, a small room with a narrow bed and a view of the regolith through a tiny viewport, and he sat down on the bed and did not sleep for a very long time.
In Greenhouse Seven, Vera Okonkwo sealed the last of the new equipment into its storage cabinet. She stood for a moment in the humming quiet, listening to the jasmine sway in its artificial breeze, listening to the soft tick of the moisture sensors, listening to the silence that had just walked out of her dome on two human legs.
She went to her workstation. She opened her private journal, the one stored on the portable drive in her breast pocket, and she added a single line.
VISITOR FROM TYCHO. JOURNALIST. HE KNOWS.
She closed the file. She locked the drive. She adjusted her sleeves.
The jasmine swayed. The dome hummed. The day continued, as days continued, in the quiet green world that she had built and that no one else entirely understood.
And in the transient crew quarters at the southern end of the base, Captain Theo Marchetti sat on the edge of his narrow bed, opened his own portable drive, and began, with the slow and deliberate care of a man who had learned to write in places where the wrong word
could get you killed, began to type.
The cursor blinked. The small room held its breath around him. Outside the viewport, the regolith stretched in its eternal silence, grey and rust-red under a sky the color of bruised copper, and Theo Marchetti let his fingers rest on the keys and felt the weight of the portable drive in his lap like the weight of a confession he had not yet made.
He thought about the botanist. He thought about the way she had looked at him across the tray of seedlings, her fingers still stained with the amber of a nutrient solution, her eyes steady and a little amused, as if she had been waiting for him and had grown tired of the wait but not, in any important way, surprised.
Vera Okonkwo. He typed the name. He stared at it.
He had come to Valles Marineris chasing a story that had begun in a Tycho bar, in a conversation with a freight engineer who had been three sheets to the wind and very far from home and who had said, with the particular clarity of the truly drunk, that there were things growing on Mars that no one on Earth was supposed to know about. The engineer had meant it as a joke. The engineer had died three weeks later in a regolith slide on the rim of Gale, and the joke had begun to feel less like a joke and more like a thread that someone had left for him to pull.
He had pulled it. He had booked passage on the next shuttle south. He had arrived at the base with a press credential that was three days past its expiration date and a notebook full of questions he did not yet know how to ask.
The questions were coming easier now. The botanist had answered most of them with the careful hospitality of a woman who understood hospitality as a form of control, and who had handed him a tray of seedlings with one hand and a glass of water with the other and had watched him the entire time as if she were measuring the distance between his curiosity and her patience.
He had eaten a leaf.
That was the part that surprised him, now, in the quiet of the crew quarters, with the regolith pressing its grey face against the viewport. He had eaten a leaf, and it had tasted of something he could not name, something between cucumber and grass and the faintest thread of mint, and he had felt, for the first time in longer than he could remember, that he had eaten something alive.
He deleted her name from the file. He wrote instead: GREENHOUSE SEVEN. CULTIVAR VARIANCE. UNREPORTED TRAIT.
The phrases were careful. The phrases would not get him arrested, or worse. The phrases were the kind of language that he had learned to use when he was twenty-three and posting dispatches from a city that no longer existed, and that he had carried with him ever since, the way a soldier carries a rifle, because the rifle kept him alive even when the soldier had stopped wanting to be alive.
He thought about calling Helena Vasquez.
He thought about it for a long time.
Helena was in the medical bay at the north end of the base, drawing the cross-section of a fractured tibia for the base surgeon and listening, with the half of her attention she kept for such things, to the comm chatter about a journalist who had wandered into Greenhouse Seven uninvited and had stayed for two hours and had eaten a leaf of something that the botanist had not offered him. Helena had opinions about journalists. Helena had opinions about most things. Helena had drawn Theo Marchetti once, three months earlier, when he had come through the medical bay with a split knuckle and a look on his face that she had recognized, with the unflinching clarity of a girl raised in a small town in New Mexico, as the look of a man who had recently hit something he wished he had not.
She had kept the drawing. She did not know why.
She picked up her comm.
"Theo," she said. "It's Helena. Are you dead yet, or just thinking about it?"
In the transient crew quarters, Theo looked at the flashing light on his comm panel. He thought about not answering. He thought about answering. He pressed the receive.
"I'm alive," he said. "Why?"
"Because you ate a plant in Greenhouse Seven, and the last person who ate something unannounced in a sealed environment spent the next six days in the decompression ward, and I would like very much for you not to be my next cross-section."
"I'm fine, Helena."
"You always say that. You are also always wrong. Are you writing something?"
He looked at the portable drive in his lap. He looked at the words on the screen.
"I'm writing something," he said.
"Good," she said. "Write something true. And then come to the medical bay and let me look at your hands. Both of them. The one you split and the one you're using to pretend you're fine."
He almost laughed. Almost.
"Helena," he said.
"What?"
"Thank you."
The line went quiet for a moment. In the medical bay, Helena Vasquez set down her stylus and looked at the cross-section of the fractured tibia she had been drawing and thought about a man she did not know very well and was beginning, against her better judgment, to know a little.
"You're welcome," she said. "Now stop being a cliché and get some sleep. You have a botanist to disappoint in the morning."
She ended the call. Theo set the comm back in its cradle. He looked at the words on the screen of the portable drive.
GREENHOUSE SEVEN. CULTIVAR VARIANCE. UNREPORTED TRAIT.
He saved the file. He closed the drive. He put it back in the inner pocket of his jacket, where it sat against his chest like a second heart, beating faintly with the information it contained.
He did not sleep for a long time. When he did, he dreamed of jasmine, and of a woman with steady eyes who had handed him a tray of seedlings and had watched him as if she had been waiting, for longer than he could know, for someone to come.
In the morning, he would return to Greenhouse Seven. In the morning, he would ask the questions he had not yet asked. In the morning, the botanist would answer them, or she would not, and either way he would write down what she said, because that was what he did, and because the woman who handed out seedlings in the green silence of a sealed dome on Mars had looked at him once as if she knew what he was, and he had not yet decided whether that look had been a warning or a welcome.
But that was the morning.
For now, the regolith held its silence. For now, the dome of Greenhouse Seven glowed faintly on the southern horizon, a small and stubborn green against the rust-red plain, and inside it a woman with stained fingers stood at her workstation and added, to her private journal, one more line.
HE CAME BACK.
She locked the drive. She adjusted her sleeves. The jasmine swayed.
The day continued.