She tapped on the screen again and the raw data began spooling past faster than Holden could follow. In a small window inside the larger screen, the Rocinante’s pattern-recognition software worked to find meaning. Holden watched it for a minute, but his eyes quickly unfocused.

“Lieutenant Kelly died for this data,” he said. “He left the ship while his mates were still fighting. Marines don’t do that unless it matters.”

Naomi shrugged and pointed at the screen with resignation.

“That’s what was on his cube,” she said. “Maybe there’s something steganographic, but I don’t have another dataset to compare it to.”

Holden began tapping on his thigh, his pain and romantic failures momentarily forgotten.

“So let’s say that this data is all that it is. There’s nothing hidden. What would this information mean to the Martian navy?”

Naomi leaned back in her chair and closed her eyes in thought, one finger twisting and untwisting a curl of hair by her temple.

“It’s mostly EM data, so lots of engine-signature stuff. Drive radiation is the best way to keep track of other ships. So that tells you where which ships were during the fight. Tactical data?”

“Maybe,” Holden said. “Would that be important enough to send Kelly out with?”

Naomi took a deep breath and let it out slowly.

“I don’t think so,” she said.

“Me either.”

Something tapped at the edge of his conscious mind, asking to be let in.

“What was that thing with Amos all about?” he said.

“Amos?”

“Him showing up at the airlock with two guns when we arrived,” he said.

“There was some trouble on our trip back to the ship.”

“Trouble for who?” Holden asked. Naomi actually smiled at that.

“Some bad men didn’t want us to hack the lockdown on the Roci.Amos talked it over with them. You didn’t think it was because we were waitingfor you, did you, sir?”

Was there a smile in her voice? A hint of coyness? Flirtation? He stopped himself from grinning.

“What did the Rocisay about the data when you ran it?” Holden asked.

“Here,” Naomi replied, and hit something on her panel. The screen began displaying long lists of data in text. “Lots of EM and light spectrum stuff, some leakage from damaged-”

Holden yelped. Naomi looked up at him.

“I’m such an idiot,” Holden said.

“Granted. Elaborate?”

Holden touched the screen and began scrolling up and down through the data. He tapped one long list of numbers and letters and leaned back with a grin.

“There, that’s it,” he said.

“That’s what?”

“Hull structure isn’t the only recognition metric. It’s the most accurate, but it’s also got the shortest range and”-he gestured around him at the Rocinante-“is the easiest to fool. The next best method is drive signature. Can’t mask your radiation and heat patterns. And they’re easy to spot even from really far away.”

Holden turned on the screen next to his chair and pulled up the ship’s friend/foe database, then linked it to the data on Naomi’s screen.

“That’s what this message is, Naomi. It’s telling Mars who killed the Donnagerby showing them what the drive signature was.”

“Then why not just say, ‘So-and-so killed us,’ in a nice easy-to-read text file?” Naomi asked, a skeptical frown on her face.

Holden leaned forward and paused, opened his mouth, then closed it and sat back again with a sigh.

“I don’t know.”

A hatch banged open with a hydraulic whine; then Naomi looked past Holden to the ladder and said, “Miller’s coming up.”

Holden turned to watch the detective finish the slow climb up from the sick bay deck. He looked like a plucked chicken, pink-gray skin stippled with gooseflesh. His paper gown went poorly with the hat.

“Uh, there’s a lift,” Holden said.

“Wish I’d known that,” Miller replied, then dragged himself up onto the ops deck with a gasp. “We there yet?”

“Trying to figure out a mystery,” Holden said.

“I hate mysteries,” Miller said, then hauled himself to his feet and made his way to a chair.

“Then solve this one for us. You find out who murdered someone. You can’t arrest them yourself, so you send the information to your partner. But instead of just sending the perp’s name, you send your partner all the clues. Why?”

Miller coughed and scratched his chin. His eyes were fixed on something, like he was reading a screen Holden couldn’t see.

“Because I don’t trust myself. I want my partner to arrive at the same conclusion I did, without my biasing him. I give him the dots, see what it looks like when he connects ’em.”

“Especially if guessing wrong has consequences,” Naomi said.

“You don’t like to screw up a murder charge,” Miller said with a nod. “Looks unprofessional.”

Holden’s panel beeped at him.

“Shit, I know why they were careful,” he said after reading his screen. “The Rocithinks those were standard light-cruiser engines built by the Bush Shipyards.”

“They were Earth ships?” Naomi said. “But they weren’t flying any colors, and… Son of a bitch!”

It was the first time Holden had ever heard her yell, and he understood. If UNN black ops ships had killed the Donnager,then that meant Earth was behind the whole thing. Maybe even killing the Canterburyin the first place. It would mean that Martian warships were killing Belters for no reason. Belters like Naomi.

Holden leaned forward and called up the comm display, then tapped out a general broadcast. Miller caught his breath.

“That button you just pressed doesn’t do what I think it does, does it?” he said.

“I finished Kelly’s mission for him,” Holden said.

“I have no idea who the fuck Kelly is,” Miller said, “but please tell me that his mission wasn’t broadcasting that data to the solar system at large.”

“People need to know what’s going on,” Holden said.

“Yes, they do, but maybe we should actually know what the hell is going on before we tell them,” Miller replied, all the weariness gone from his voice. “How gullible areyou?”

“Hey,” Holden said, but Miller got louder.

“You found a Martian battery, right? So you told everyone in the solar system about it and started the single largest war in human history. Only turns out the Martians maybe weren’t the ones that left it there. Then, a bunch of mystery ships kill the Donnager,which Mars blames on the Belt, only, dammit, the Belt didn’t even know it was capableof killing a Martian battle cruiser.”

Holden opened his mouth, but Miller grabbed a bulb of coffee Amos had left behind on the console and threw it at his head.

“Let me finish! And now you find some data that implicates Earth. First thing you do is blab it to the universe, so that Mars andthe Belt drag Earth into this thing, making the largest war of all time even bigger. Are you seeing a pattern here?”

“Yes,” Naomi said.

“So what do you think’s going to happen?” Miller said. “This is how these people work! They made the Canterburylook like Mars. It wasn’t. They made the Donnagerlook like the Belt. It wasn’t. Now it looks like the whole damn thing’s Earth? Follow the pattern. It probably isn’t! You never, neverput that kind of accusation out there until you know the score. You look. You listen. You’re quiet, fercrissakes, and when you know, thenyou can make your case.”

The detective sat back, clearly exhausted. He was sweating. The deck was silent.

“You done?” Holden said.

Miller nodded, breathing heavily. “Think I might have strained something.”

“I haven’t accused anyone of doing anything,” Holden said. “I’m not building a case. I just put the data out there. Now it’s not a secret. They’re doing something on Eros. They don’t want it interrupted. With Mars and the Belt shooting at each other, everyone with the resources to help is busy elsewhere.”