“This stuff suffocated Cong,” Lowen said.
“Right,” Wilson said. “As for the receiver, well, SmartBlood takes direction from its owner’s BrainPal via an encrypted channel and reverts by default to its primary role, which is oxygen transport.” He pointed to Abumwe’s PDA. “This stuff also communicates by encrypted signal. Its default state is off, however. It’s only on the job when it’s receiving a signal. Its signal doesn’t come from a BrainPal, however.”
“Where does it come from?” Meyer asked.
Lowen held up an object. It was Meyer’s white noise generator.
“It can’t be,” Meyer said.
“It can be,” Wilson said. “And it is, because we checked it. How do you think we can describe what this stuff does? This is why I said the interesting question is when this stuff got into Liu’s blood. Because this”-Wilson pointed to the white noise generator, which Lowen now set on the table-“strongly suggests that it happened before you folks left Earth.”
“How did you find it?” Abumwe asked.
“We walked through Liu’s death,” Stone said. “We knew when he died, and we knew that these ’bots needed a transmitter, and Mr. Bourkou said that he had been running the white noise generator to drown out Liu’s snoring.”
“You can’t think I did it,” Bourkou said.
“You set this thing off in the same room,” Wilson said.
“It’s not even mine,” Bourkou said. “Franz let me borrow it. It’s his.”
“That’s true,” Wilson said, turning to Meyer.
Meyer looked shocked. “I didn’t kill Cong! And this doesn’t make logical sense in any event. Cong was supposed to have a berth to himself. This thing wasn’t supposed to have been in the same room.”
“A very good point,” Wilson said. “Which is why I checked the effective transmitting radius of the generator’s ’bot transmitter. It’s about twenty meters. Your berth is right next door, and the berths are narrow enough that Liu’s bunk is well within the radius, even accounting for signal attenuation through the common bulkhead.”
“We’ve been traveling for a more than a week before we arrived here,” Meyer said. “Before this we had individual staterooms, but we were still close enough for this thing to work. I used it every night. Nothing happened to Cong.”
“Interestingly, there are two transmitters in the white noise generator,” Wilson said. “One of them affects the ’bots. The second affects the first transmitter. It turns it on or off.”
“So it wouldn’t have done anything until you got here,” Lowen said.
“This is crazy,” Meyer said. “I don’t have a remote control for this thing! Go to my berth! Check for yourself!”
Wilson looked over at Captain Coloma. “I’ll have crew go through his berth,” she said.
“Have you dumped trash recently?” Wilson said.
“No,” Coloma said. “We usually don’t dump until we return to Phoenix Station, and when we do, we don’t do it in other people’s systems. That’s rude.”
“Then I would suggest we look through the trash,” Wilson said. “I can give you the transmitting frequency if it helps.” Coloma nodded.
“Why did you do it?” Bourkou asked Meyer.
“I didn’t do it!” Meyer yelled. “You are just as likely to have done it as I am, Thierry. You had the generator in your possession. You’re the one who convinced Cong to give up his berth for me. I didn’t ask him.”
“You complained about claustrophia,” Bourkou said.
“I joked about claustrophobia, you ass,” Meyer said.
“And I wasn’t the one who suggested it to him,” Bourkou said. “It was Luiza. So don’t pin it on me.”
A strange expression crossed Meyer’s face. Wilson caught it. So did Abumwe. “What is it?” she asked Meyer.
Meyer looked around at the group, as if debating whether to say something, then sighed. “I’ve been sleeping with Luiza Carvalho for the last three months,” he said. “During the selection process for this mission and then since. It’s not a relationship, it’s more taking advantage of a mutual opportunity. I didn’t think it would matter since neither of us was in a position to select the other for the mission.”
“All right,” Abumwe said. “So?”
“So Luiza always complained about me sleeping badly,” Meyer said, and pointed at the white noise generator. “Two weeks ago, after we knew who was on the mission, she bought me that. Said it would help me sleep.”
“Luiza was the one who suggested to Meyer that he let me borrow the generator,” Bourkou said. “To counteract Cong’s snoring.”
“Where is Ms. Carvalho?” Stone asked.
“She said she was going to her berth,” Abumwe said. “Lieutenant Wilson didn’t ask for her to be here, so I didn’t ask her to come.”
“We should probably have someone get her,” Wilson said, but Coloma was already on her PDA, ordering someone to get her.
Coloma’s PDA pinged almost immediately thereafter; it was Neva Balla. Coloma put her executive officer on the speaker so everyone in the room could hear. “We have a problem,” Balla said. “There’s someone in the portside maintenance airlock. It looks like one of the Earth people.”
“Send me the image,” Coloma said. When she got it, she bounced it to the PDAs of everyone else in the room.
It was Luiza Carvalho.
“What is she doing?” Lowen asked.
“Lock out the airlock,” Coloma said.
“It’s too late,” Balla said. “She’s already started the purge cycle.”
“She must have been listening in somehow,” Abumwe said.
“How the hell did she get in there?” Coloma asked, angry.
“The same way she got Meyer and Bourkou to help her kill Liu,” Wilson said.
“But why did she do it?” Meyer said. “Who is she working with? Who is she working for?”
“We’re not going to get an answer to that,” Wilson said.
“Well, we know one thing, at least,” Lowen said.
“What’s that?” Wilson asked.
“Whoever’s been sabotaging you up here, it looks like they’re on the job down there on Earth,” Lowen said.
“Almost got away with it, too,” Wilson said. “If we didn’t have that scanner, it would have looked like the Colonial Union killed him. By the time it was cleared up, it would have been too late to fix it.”
No one said anything to that.
In the video feed, Carvalho looked up to where the camera was, as if looking at the group in the medical bay.
She waved.
The air purged out of the airlock. Carvalho exhaled and kept exhaling long enough to stay conscious until the hull lock opened.
She let herself out.
“Dani,” Wilson said.
“Yeah, Harry,” Lowen said.
“You still have the Laphroaig?” Wilson asked.
“I do,” Lowen said.
“Good,” Wilson said. “Because right now, I think we all need a drink.”