Caliban's War: Book Two of the Expanse series (53 page)

“No harm trying, though.”

“It’s what we do,” Avasarala said.

The marine nodded curtly. For a moment, Avasarala thought she might be going to salute, but instead, she lumbered out toward the complimentary bar in the wide common area. There was a fountain out there with sprays of water drifting down fake bronze
sculptures of horses and underdressed women. If that didn’t make someone want a stiff drink of something, then nothing would.

Avasarala thumbed on the video feed again.

“This is James Holden—”

She turned it off again.

“At least you lost that fucking beard,” she said to no one.

P
rax remembered his first epiphany. Or possibly, he thought, the one he remembered as his first. In the absence of further evidence, he went with it. He’d been in second form, just seventeen, and in the middle of a genetic engineering lab. Sitting there among the steel tables and microcentrifuges, he’d struggled with why exactly his results were so badly off. He’d rechecked his calculations, read through his lab notes. The error was more than sloppy technique could explain, and his technique wasn’t even sloppy.

And then he’d noticed that one of the reagents was chiral, and he knew what had happened. He hadn’t figured anything wrong but he had assumed that the reagent was taken from a natural source rather than generated de novo. Instead of being uniformly left-handed, it had been a mix of chiralities, half of them inactive. The insight had left him grinning from ear to ear.

It had been a failure, but it was a failure he understood, and that made it a victory. The only thing he regretted was that seeing what should have been clear had taken him so long.

The four days since he had sent the broadcast, he’d hardly slept. Instead, he’d read through the comments and messages pouring in with the donations, responding to a few, asking questions of people all over the system whom he didn’t know. The goodwill and generosity pouring out to him was intoxicating. For two days, he hadn’t slept, borne up on the euphoria of feeling effective. When he had slept, he’d dreamed of finding Mei.

When the answer came, he only wished he’d found it before.

“The time they had, they could have taken her anywhere, Doc,” Amos said. “I mean, not to bust your balls or nothing.”

“They could,” Prax said. “They could take her anywhere as long as they had a supply of her medications. But she’s not the limiting factor. The question is where they were coming from.”

Prax had called the meeting without a clear idea of where to have it. The crew of the
Roci
was small, but Amos’ rooms were smaller. He’d considered the galley of the ship, but there were still technicians finishing the repairs, and Prax wanted privacy. In the end, he’d checked the incoming stream of contributions from Holden’s broadcast and taken enough to rent a room from a station club.

Now they were in a private lounge. Outside the wall-screen window, the great construction waldoes shifted by tiny degrees, attitude rockets flaring and going still in patterns as complex as language. Another thing Prax had never thought about before coming here: The station waldoes had to fire attitude rockets to keep their movements from shifting the station they were attached to. Everything, everywhere, a dance of tiny movements and the ripples they made.

Inside the room, the music that floated between the wide tables and crash-gel chairs was soft and lyrical, the singer’s voice deep and soothing.

“From?” Alex said. “I thought they were from Ganymede.”

“The lab on Ganymede wasn’t equipped to deal with serious research,” Prax said. “And they arranged things so that Ganymede would turn into a war zone. That’d be a bad idea if they were doing their primary work in the middle of it. That was a field lab.”

“I try not to shit where I eat,” Amos said, agreeing.

“You live on a spaceship,” Holden said.

“I don’t shit in the galley, though.”

“Fair point.”

“Anyway,” Prax said, “we can safely assume they were working from a better-protected base. And that base has to be somewhere in the Jovian system. Somewhere nearby.”

“You lost me again,” Holden said. “Why does it need to be close?”

“Transport time. Mei can go anywhere if there’s a good supply of medications, but she’s more robust than the … the things.”

Holden raised his hand like a schoolboy asking a question.

“Okay, I could be hearing you wrong, but did you just say that the thing that ripped its way into my ship, threw a five-hundred-kilo storage pallet at me, and almost chewed a path straight to the reactor core is more delicate than a four-year-old girl with no immune system?”

Prax nodded. A stab of horror and grief went through him. She wasn’t four anymore. Mei’s birthday had been the month before, and he’d missed it. She was five. But grief and horror were old companions by now. He pushed the thought aside.

“I’ll be clearer,” he said. “Mei’s body isn’t fighting its situation. That’s her disease, if you think about it. There’s a whole array of things that happen in normal bodies that don’t happen in hers. Now you take one of the things, one of the creatures. Like the one from the ship?”

“That bastard was pretty active,” Amos said.

“No,” Prax said. “I mean, yes, but no. I mean active on a biochemical level. If Strickland or Merrian or whoever is using the protomolecule to reengineer a human body, they’re taking one
complex system and overlaying another one. We know it’s unstable.”

“Okay,” Naomi said. She was sitting beside Amos and across the table from Holden.
“How
do we know that?”

Prax frowned. When he’d practiced making the presentation, he hadn’t expected so many questions. The things he’d thought were obvious from the start hadn’t even occurred to the others. This was why he hadn’t gone in for teaching. Looking at their faces now, he saw blank confusion.

“All right,” he said. “Let me take it from the top. There was something on Ganymede that started the war. There was also a secret lab staffed with people who at the very least knew about the attack before it happened.”

“Check,” Alex said.

“Okay,” Prax said. “In the lab, we had signs of the protomolecule, a dead boy, and a bunch of people getting ready to leave. And when we got there, we only had to fight halfway in. After that, something else was going ahead of us and killing everyone.”

“Hey!” Amos said. “You think that was the same fucker that got into the
Roci?”

Prax stopped the word
obviously
just before it fell from his lips.

“Probably,” he said instead. “And it seems likely that the original attack involved more like that one.”

“So two got loose?” Naomi asked, but he could see that she already sensed the problem with that.

“No, because they knew it was going to happen. One got loose when Amos threw that grenade back at them. One was released intentionally. But that doesn’t matter. What matters is that they’re using the protomolecule to remake human bodies, and they aren’t able to control it with perfect fidelity. The programming they’re putting in fails.”

Prax nodded, as if by doing it he could will them to follow his chain of reasoning. Holden shook his head, paused, and then nodded.

“The bomb,” he said.

“The bomb,” Prax agreed. “Even when they didn’t know that the second thing was going to get loose, they’d outfitted it with a powerful incendiary explosive device.”

“Ah!” Alex said. “I get it! You figure they knew it was going to go off the rails eventually, so they wired it to blow if it got out of hand.”

In the depths of space, a construction welder streaked across the hull of the half-built ship, the light of its flare casting a sudden, sharp light across the pilot’s eager face.

“Yes,” Prax said. “But it could be also be an ancillary weapon, or a payload that the thing was supposed to deliver. I think it’s a fail-safe. It probably is, but it could be any number of other things.”

“Okay, but it left it behind,” Alex said.

“Given time, it
ejected
the bomb,” Prax said. “You see? It chose to reconfigure itself to remove the payload. It didn’t place it to destroy the
Roci
, even though it could have. It didn’t deliver it to a preset target. It just decided to pop it loose.”

“And it knew to do that—”

“It’s smart enough to recognize threat,” Prax said. “I don’t know the mechanism yet. It could be cognitive or networked or some kind of modified immune response.”

“Okay, Prax. So if the protomolecule can eventually get out of whatever constraints they’re putting on it and go rogue, where does that get us?” Naomi asked.

Square one
, Prax thought, and launched in on the information he’d intended to give them in the first place.

“It means that wherever the main lab is—the place they didn’t release one of those things on—it has to be close enough to Ganymede to get it there before it slipped its leash. I don’t know how long that is, and I’m betting they don’t either. So closer is better.”

“A Jovian moon or a secret station,” Holden said.

“You can’t have a secret station in the Jovian system,” Alex said. “There’s too much traffic. Someone’d see something. Shit, it’s where most of the extrasolar astronomy was going on until we got out to Uranus. Put something close, the observatories are gonna get pissed because it’s stinking up their pictures, right?”

Naomi tapped her fingers against the tabletop, the sound like the ticking of condensate falling inside sheet metal vents.

“Well, the obvious choice is Europa,” she said.

“It’s Io,” Prax said, impatience slipping into his voice. “I used some of the money to get a tariff search on the kinds of arylamines and nitroarenes that you use for mutagentic research.” He paused. “It’s all right that I did that, isn’t it? Spent the money?”

“That’s what it’s there for,” Holden said.

“Okay, so mutagens that only start functioning after you activate them are very tightly controlled, since you can use them for bioweapons research, but if you’re trying to work with that kind of biological cascade and constraint systems, you’d need them. Most of the supplies went to Ganymede, but there was a steady stream to Europa too. And when I looked at that, I couldn’t find a final receiver listed. Because they shipped back out of Europa about two hours after they landed.”

“Bound for Io,” Holden said.

“It didn’t list a location, but the shipping containers for them have to follow Earth and Mars safety specifications. Very expensive. And the shipping containers for the Europa shipment were returned to the manufacturer for credit on a transport bound from Io.”

Prax took a breath. It had been like pulling teeth, but he was pretty sure he’d made all the points he needed to for the evidence to be, if not conclusive, at least powerfully suggestive.

“So,” Amos said, drawing the word out to almost three syllables. “The bad guys are probably on Io?”

“Yes,” Prax said.

“Well shit, Doc. Coulda just said so.”

The thrust gravity was a full g but without the subtle Coriolis of Tycho Station. Prax sat in his bunk, bent over his hand terminal. There had been times on the journey to Tycho Station when being half starved and sick at heart were the only things that distracted
him. Nothing physical had changed. The walls were still narrow and close. The air recycler still clicked and hummed. Only now, rather than feeling isolated, Prax felt he was in the center of a vast network of people, all bent toward the same end that he was.

Prax had composed a form letter for responding to all the general well-wishers, and he’d considered trying to find a filter that could identify those messages and reply automatically with the canned response. He held off because he wasn’t sure how well he could define the conditions set, and he didn’t want anyone to feel that their sentiments were being taken for granted. And after all, he had no duties on the
Rocinante
.