Kepler-442b was the best target in the Diaspora catalog. Rocky, temperate, 1.12g, spectroscopic confirmation of liquid water and a nitrogen-oxygen atmosphere. The committee assigned it to Batch 07—the highest-rated crew in the program—and gave them a projected success rate of 94.2%, which was the highest number the modeling software had ever produced and which several committee members privately called "suspicious."
From orbit, the planet justified the optimism. Dense temperate broadleaf forests across the habitable zone. High-altitude grasslands. River valleys cutting through basalt ridgelines. Volatile climate—NOMA flagged massive electrical storm systems rolling in from the western ocean every few days—and active geology: seismic tremors, thermal vents, unstable terrain. But all within the operational envelope. Hard enough to require the A-team. Not so hard the A-team couldn't handle it.
What the spectroscopy hadn't shown—what no instrument at 112 light years could resolve—was the wildlife.
The crew landed on a high plateau where the canopy thinned enough for a clearing. Joss Lam, the combat specialist and structural engineer, had the perimeter fencing up by day two—electrified, powered off the Theron's backup cells. Kade Oliveira calibrated the weather prediction system and started building a six-hour storm warning model. Reed Tanaka mapped the fault lines and confirmed the plateau was seismically stable. Thatch Mbewe had soil assays running before the first sunset.
Neri Sato, the xenobiologist, took one look at the motion-sensor data from night one and stopped sleeping well.
Neri named them Sicklejaws for the curved mandible structure—two interlocking bone blades that could shear through the Theron's hull plating in lab tests. They hunted in packs of four to eight. They used terrain, wind direction, and the electrical storms as cover. Over the first two weeks, they made nine attempts on the perimeter, each one different from the last, each one a little closer to getting through.
On night twelve, one got in. It killed three of the small herbivores Thatch had been observing near the water filtration system, ate one, and left the other two arranged in a pattern that Neri said was either territorial marking or "the animal equivalent of a warning shot, and I genuinely cannot tell which." Joss reinforced the fence. The crew started sleeping in shifts.
The planet was harder than anyone had expected. But the crew was good. That was the thing—they were good. Maren Engel ran the operation with the focused calm of a woman who'd been trained to manage crises on the International Space Station and had gotten bored of it. Kade's weather system reduced storm casualties to zero. Joss turned the perimeter into something the Sicklejaws stopped testing by week four. Reed found a thermal vent system that could provide geothermal power for decades. Pike Dunham kept the comms and logistics running so smoothly that Maren once said managing him was "like managing gravity—you don't have to think about it, it just works."
By week three, the settlement was functional. By week six, it was comfortable. The crew was winning.
Neri wanted a field study. The Sicklejaws had stopped probing the perimeter—Joss's upgrades had made the fence effectively impenetrable—but they hadn't left. They were out there in the forest, watching, learning. Neri's motion sensors caught them at the tree line most nights, just sitting. Observing. She said it was the most unsettling animal behavior she'd ever recorded.
"I need to understand what we're dealing with," she told Maren at the day-eighteen briefing. "If these things are as smart as I think they are, the fence is a temporary solution. They'll find a way around it eventually. I need samples, behavioral data, close observation of a hunt on native prey. There's a waterhole about three klicks south where the herbivore concentrations are highest."
Maren approved it with conditions: buddy system, radio check every hour, sidearm. She assigned Eli Vasik as Neri's partner—standard protocol, surgeon on-site for any excursion beyond a klick. Neri agreed. Eli was quiet, patient, and wouldn't spook the subjects. They left at dawn on day twenty.
The waterhole was everything Neri had hoped. A natural clearing at the base of a basalt ridge, fed by a thermal spring, ringed by the broadleaf trees that dominated the local canopy. Herbivore tracks everywhere—large, flat-footed ungulate-analogs that Neri had been cataloging from sensor data. She and Eli set up the blind on a scree ledge overlooking the waterhole, about twelve feet above the valley floor, with good sightlines in three directions.
On day twenty-two, they observed their first Sicklejaw hunt. A pack of six, working the tree line, driving a group of ungulates toward a narrow ravine where two more Sicklejaws waited in ambush. The coordination was extraordinary. Neri recorded the whole thing, whispering observations into her handheld while Eli sat beside her, still as stone, watching.
On day twenty-three, the wind shifted.
The crew buried Neri on the plateau, in a cairn of basalt that Reed selected for its stability. Maren said a few words. Pike cried—he and Neri had been close, the kind of quiet friendship that builds between two people who eat breakfast together every morning and don't need to talk. Hana Voss held Pike's hand during the service and sat with him afterward for an hour. Eli offered Pike a mild sedative that evening when Pike couldn't sleep; Pike took it and slept twelve hours and felt better in the morning and thanked Eli for knowing what he needed.
Maren tightened the protocols. No more field studies beyond the perimeter without a minimum team of three. The observation blind was decommissioned. Neri's research files were transferred to Thatch, who would continue the xenobiology work from inside the fence using sensor data and Neri's notes.
The settlement kept building. The first electrical storm of the season hit on day twenty-eight—four hours of sustained lightning, wind gusts above 120 kph. Kade's warning system gave them six hours' lead time. Nobody was hurt. The fence held. The Sicklejaws were spotted at the tree line during the storm, using the noise and the sensor degradation to get closer than they had in weeks. Joss fired two deterrent rounds. They retreated.
Thatch got the first Earth crops germinating on day thirty-five. Sol completed the aerial survey of the surrounding fifty-kilometer radius and confirmed four potential expansion sites. The geothermal tap Reed had identified was producing stable energy by day forty. Hana ran crew wellness checks and reported morale as "shaken but recovering." The colony was doing what it was designed to do. One loss, terrible but survivable. The planet was hard. They were harder.
The storm on day sixty was the worst since landing. Nine hours. Kade's system flagged it early, but the scale exceeded his models—sustained electrical discharge across the entire valley, wind speeds that bent the broadleaf trees to forty-five degrees, rain so dense the sensors went blind. NOMA counted over eight hundred ground strikes within five kilometers. The crew sealed the shelters and waited.
When they emerged, the northern perimeter was down. A lightning strike had fused the main power coupling, and the cascading failure took out three fence sections. The Sicklejaws had already found the gap—fresh tracks inside the perimeter, ungulate blood on the ground near the crop plot. They'd come in during the storm, killed something, and left. Joss said the tracks showed at least four individuals, moving with purpose, in and out in under twenty minutes.
"They waited for this," Neri would have said, if Neri had been alive. She'd predicted it in her notes—that the Sicklejaws would eventually learn to use the storms as cover. Thatch read the relevant passage aloud at the morning briefing and the room went quiet.
Joss went out to repair the coupling. Dangerous work—live electrical components, wet rock, exposed ridgeline. Maren assigned Eli as his partner. Eli had been pulling medical standby for all high-risk fieldwork since Neri's death; it was standard protocol, and Eli was reliable. Kade stayed in the command shelter monitoring the weather for secondary cells. Reed kept comm relay.
They buried Joss next to Neri. Maren examined the body before Eli did the formal post-mortem—she had the emergency medicine background to read a wound. The skull fracture was massive, radiating from a point of impact on the left temporal bone. Consistent with a fall onto basalt. Consistent with the height. She stood in the medical bay and looked at the wound and tried to see anything wrong with it and couldn't.
Eli's report matched what she'd seen. Blunt-force cranial trauma. Compound fracture. Injuries consistent with an eighteen-meter uncontrolled fall onto rock. Textbook.
Two deaths in forty days. Both in the field. Both during high-risk activities that were part of normal operations on a dangerous planet.
Maren wrote the incident report and filed it and sat alone in the command shelter for a long time afterward, thinking about probability and bad luck and whether two field deaths in six weeks on a planet this hostile was unusual or just exactly the kind of thing the operational envelope was supposed to account for. She thought about the fact that Eli had been present for both and then thought about how that was literally his job—he was the surgeon, he was supposed to be present for high-risk activities—and then she thought about how she was probably just scared and grieving and looking for patterns where there were none.
She went to find Hana. She needed to talk to someone.
Hana listened. She was good at it—the best listener on the crew, maybe the best listener Maren had ever met. She let Maren talk through the deaths, the probability question, the uneasy feeling she couldn't quite name. When Maren finished, Hana said: "You're describing a trauma response, Maren. Two sudden losses in six weeks. Your brain is trying to make the randomness feel intentional because intentional is less frightening than random. If there's a cause, there's something to fix. If it's just the planet being the planet, there's nothing to fix, and that's harder to sit with."
"So I'm being paranoid."
"You're being human. But—look, grief and stress do strange things to pattern recognition. I'll do a full wellness check on the whole crew. Standard post-trauma protocol. Everyone, including Eli, including you. If there's something off with anyone, I'll find it."
Maren agreed. Hana ran the checks over the following two weeks. She spent an hour with each crew member. She reported her findings to Maren on day eighty: everyone was stressed, everyone was grieving, but nobody was outside normal parameters. Eli in particular she described as "reserved but stable—processing the losses quietly, maintaining function." She scheduled follow-up sessions for the crew members she wanted to monitor more closely. Eli's next session was on day eighty-five.
On the morning of day eighty-four, Pike found Hana in her quarters. She was dead. Her face was swollen, her airway closed. The epinephrine kit was on the shelf three feet from her bed.
Eli performed the post-mortem. Anaphylactic shock triggered by exposure to a native plant alkaloid—a histamine-releasing compound from a low-growing shrub that Thatch had cataloged weeks earlier. Several crew members had experienced mild skin irritation from contact with its sap. Eli's report noted that a concentrated dose could trigger a catastrophic allergic response in someone with an undiagnosed sensitivity, and that Hana had no documented allergies, which was "not uncommon with novel xenobiological compounds where prior exposure history does not exist."
The plant was real. The compound was real. The reaction was real. It was the planet. It was just the planet, killing them in a new way. A way they hadn't anticipated, because you can't anticipate every way a new world can kill you; that's why the committee sent the best crew they had, and the best crew was down to eight and had now lost their psychologist to a shrub.
Maren read Eli's report in the command shelter, alone, at two in the morning. She read it twice. Then she opened the incident reports for Neri and Joss and laid all three side by side on the table and looked at them for a long time.
Three deaths. The xenobiologist, killed by the wildlife she'd been studying. The combat specialist, killed by the terrain he'd been securing. The psychologist, killed by the botany she'd been living among.
Each one explicable. Each one a plausible consequence of living on a hard planet. Each one—
Each report filed by the same person.
Maren closed the files. She went for a walk around the perimeter in the grey light before dawn. She thought about the three people they'd lost and the one person who'd been the last to see two of them alive and the first to examine all three of them dead. She thought about how that was his job. She thought about how that explanation made perfect sense. She thought about how the person best positioned to make a death look natural on an alien planet was the one with the surgical training and the access to the medical bay and the authority to write the post-mortem that everyone else relied on because nobody else was qualified to do it.
She thought: I am losing my mind. The planet is killing us and I am looking for a monster because a monster would be easier to fight than bad luck.
Then she thought: But what if I'm not.
She told Kade. Not because she believed it yet—she still thought she was probably wrong, probably grieving, probably constructing a conspiracy out of coincidence. She told Kade because Kade was the most dispassionate person on the crew and would either confirm that she was spiraling or give her a reason to keep pulling the thread.
They met in the engineering bay. Door sealed. Audio logs disabled. Maren laid it out: three deaths, the pattern, the single common element. She expected Kade to talk her down.
Kade didn't talk her down.
Maren sat in the engineering bay and felt the ground shift under her. Not literally—Reed had confirmed the plateau was stable. But the world she'd been living in for eighty-eight days, the world where the planet was the enemy and the crew was the team, rearranged itself around a new axis, and the new shape was worse.
She went back through the three deaths. Not as tragedies this time. As operations.
They moved on day eighty-nine. Maren briefed Reed, Sol, and Thatch at 04:00—the three she assessed as most capable of physical restraint if it came to that. She didn't tell them what she suspected. She said NOMA had flagged a medical concern in Eli's post-cryo data that required immediate evaluation, and that Eli might resist examination.
She put a benzodiazepine in his coffee at breakfast. He went down in four minutes. They zip-tied his wrists and ankles and locked him in the storage module—no tools, no chemicals, one door, which Kade welded shut from the outside.
Then Maren told the crew everything.
Maren went in alone. Kade and Reed waited outside with sidearms.
Eli was sitting against the wall, wrists bound. He looked up when the door opened. His expression was confused, concerned—the face of a crew member who'd been drugged and restrained and didn't understand why.
"Maren? What's going on? Is everyone okay?"
His voice was perfect. Worried. Slightly groggy from the benzodiazepine. Exactly what an innocent man would sound like. Maren had to remind herself that she'd seen the biometric data before she could keep going.
"Three people are dead, Eli. You were the last person with two of them and the only one with access to all three autopsy reports."
"I'm the surgeon, Maren. That's my job. Being present for high-risk activities is literally—"
"Your heart rate was 72 bpm while Neri was being killed."
Eli paused. A brief recalculation behind the eyes—fast, almost invisible. Then: "Dissociative response. Trauma training. When a patient codes on the table, my heart rate drops too. Sable could tell you—" He stopped. Sable wasn't on this crew. Old habit, old lie, pulled from a different context. He recovered instantly. "It's a documented phenomenon. High-stress medical professionals often present with—"
"Your heart rate was higher when you stitched a cut on Reed's arm than when you watched Neri die."
"Adrenaline responses aren't linear. You know that. You have emergency medicine training. A routine procedure with a patient you're focused on can produce more sympathetic activation than—"
"You got up at 02:14 on the night Hana died. Fourteen minutes of elevated heart rate and galvanic skin response. Then back to baseline. Then back to sleep. Ninety minutes later she was dead from a compound you had the skills to synthesize in the medical bay."
Silence. Longer this time. Maren watched Eli's face cycle through three expressions in about two seconds—concern, calculation, and then something she'd never seen on him before. Not anger. Not fear. A kind of stillness. The concerned-colleague mask didn't come down gradually. It just stopped, like someone switching off a monitor, and what was behind it was flat and cool and watching her with an interest that had nothing to do with warmth.
"The galvanic data," he said. His voice was different now. Not worried. Not performing. Just level. "That's what I missed. I managed the heart rate—breathing exercises, vagal maneuvers. I thought I had the cortisol controlled. I didn't account for the skin conductance."
"So you're—"
"I'm not going to keep performing for an audience that already has the data, Maren. That would be inefficient."
Seven people, one planet, and a murderer in a sealed room.
They couldn't execute him. Not because they lacked the means—Maren had the sidearms—but because the crew couldn't reach consensus. Thatch and Reed wanted him dead. Pike couldn't stop shaking long enough to vote. Sol abstained. Kade argued for indefinite confinement, and Maren agreed—not out of mercy, but because executing the only surgeon on the planet felt like a decision they might regret in five years when someone needed emergency surgery and the only person who could perform it was a grave on the plateau.
They kept him. For six years.
Eli Vasik sat in a sealed storage module at the edge of the settlement and did not attempt to escape. He ate what they gave him. He slept on the floor. When Maren came to the door-slot to speak with him—roughly once a week, because someone had to monitor him and the psychologist was dead—he was calm, engaged, polite. He asked about the settlement. He offered medical advice through the slot. He diagnosed Sol's recurring abdominal pain as a gallbladder issue from behind a welded door and was correct.
They opened the box twice.
Once when Pike was gored by a Sicklejaw that breached the upgraded perimeter—a deep abdominal wound that would kill him in hours without surgery. Maren stood behind Eli with a pistol to the back of his head while he operated. His hands were steady. His sutures were art. Pike survived. Eli walked back to the box without being asked.
The second time was when Thatch's daughter was born breech. Maren couldn't turn the baby. She opened the box at two in the morning, and Eli walked to the medical bay in his bare feet and delivered a healthy girl in forty minutes. He stood there holding the infant in his bloody hands, looking down at her with the same expression of calm interest he wore for everything. When Maren said "give her back," he handed the baby to Thatch and walked back to the box and sat down.