“There aren’t any pictures on the datapod,” I say. “Only written descriptions.”

“That’s because we all know what they look like,” another sorter says, sounding annoyed.

“I know,” I say softly, “but I don’t. And it’s affecting the sorts we do. They’re wrong.”

“Are you saying we’re not doing our job correctly?” the first sorter asks, her voice cold. “We know the data could have errors. But we’re sorting it in the most efficient way we can.”

“No,” I say, shaking my head. “That’s not what I mean. It’s not the beginning or the end of the sort—it’s not the data or the way we’re sorting it. Something’s not coming together in the middle, in the correlation of the lists. It’s as if there’s an underlying phenomenon that we’re not observing, some latent variable that we’re not measuring in the data.” I’m sure that our understanding of the relationship between these two sets of data isn’t right. As sure as I am that I’m missing the middle of the red garden day memory.

“The important thing,” says the other sorter, “is that we keep getting the lists to Oker.” Every day, we send him suggestions of what might contribute to the cure, weighted according to the best information we have about the patients and taking into account what hasn’t worked.

“I don’t know how much Oker listens to us anyway,” I say. “I think there’s one person Oker trusts, and that’s himself. But if we can come to some kind of consensus on what should be the most important ingredients and give that to him—he might be more likely to take what we say into account if our analysis lines up.”

Leyna is watching me.

“But that’s what we’re doing,” one of the sorters protests.

“I don’t feel like I’m doing it right,” I say. Frustrated, I push back my chair and stand up, holding the datapod in my hand. “I think I’ll take my break now.”

Rebecca nods.

“I’ll walk you to the infirmary,” Leyna says, surprising me. She works very, very hard, and I know the Otherlands are to her what Ky is to me, the best, most beautiful place, not fully realized, but full of promise.

We cross the village circle and pass the enormous stone set there. In front of it are two narrow troughs.

“What do you use these for?” I ask Leyna.

“Voting,” she says. “It’s how we choose. The farmers, too. Each person in the village has a little stone with his or her name written on it. Those troughs are where people cast their stones. The choice, or trough, with the most votes wins.”

“And are there always only two choices?” I ask.

“Usually,” Leyna says. Then she gestures for me to follow her around to the other side of the stone. “Look back here.”

There are tiny names on the stone, arranged in columns. Someone has chipped and carved them in. They start at the top and come down to the bottom, where there is only a little room left.

“This column,” Leyna says, “is a list of all those who have died in this village, in Endstone. And this,” she adds, pointing to another part of the stone, “is a list of people who have gone on to the Otherlands. This is the jumping-off place, so to speak, so anyone who came through here on their way to the Otherlands—no matter where they came from originally—has their name carved here.”

I stand there for another moment, looking at the names on the stone in the Otherlands column, hoping to find someone. At first my eyes slide right over his name, not daring to believe he’s there, but then I look back and it hasn’t disappeared.

Matthew Markham.

“Did you know him?” I ask Leyna eagerly, touching the name.

“Not well,” she says. “He was from another village.” She looks at me with interest. “Do you know him?”

“Yes,” I say, my heart pounding. “He lived in the Borough. His parents sent him out of the Society.” I should have thought to ask about this sooner; I can’t wait to tell Ky that his cousin was here once, that he might be alive somewhere, even if it’s in a place from which people do not come back.

“A lot of those who vanished went on to the Otherlands,” she says. “Some of them—and I can’t remember if Matthew was this way—felt that, if their parents didn’t want them in the Society, they’d get even farther away than their families intended. For some, it was almost like revenge.” Then she puts her hand on his name, too. “But you say he used this name in the Borough?”

“Yes,” I say. “It’s his real name.”

“That’s something, then,” she says. “Many of them changed their last names. He didn’t. That means he didn’t want to erase the trail completely if someone wanted to look for him eventually.”

“They had no ships,” I say. “So they would have had to walk all the way to the Otherlands.”

She nods. “That’s why they don’t come back,” she says. “The journey is too long. Without ships, it takes years.” Then she points to the bottom of the stone. “There’s just enough space for the rest of our names,” she says. “It’s a sign that we should go.”

“I understand,” I say. The stakes are high, almost impossibly so, for every single one of us.

When I get to the infirmary, I tell Ky all about the stone. “It’s proof that Anna’s right, that he didn’t die in Oria,” I say, “unless there’s another Matthew Markham, but the likelihood of that is . . .” I stop calculating and breathe out. “I think it’s him. I feel it.”

I try to remember Matthew. Dark-haired, older than me, handsome. He looked enough like Ky that you could tell they were cousins, but different. Matthew wasn’t as quiet as Ky; he had a louder laugh, a bigger presence in the Borough. But he was kind, like Ky.

“Ky,” I say, “when we find the cure, I’ll take you to see the stone. And then we can go back and tell Patrick and Aida.”

I’m about to say more when the door opens. Anna has brought Eli to see me at last.

Eli has grown, but he still lets me hold him the way I hope Bram will when I see him again, pulled close and tight. “You made it,” I say. He smells like the outdoors, a scent of pine and dirt, and I am so glad he’s well that tears stream down my cheeks even though I smile.

“Yes,” Eli says.

“I lived in your city,” I say. “In Central. I thought of you all the time and wondered if I was walking on the streets where you lived, and I saw the lake.”

“I miss it sometimes,” Eli says. He swallows. “But it’s better here.”

“Yes,” I say. “It is.”

When Eli pulls away, I look over at Hunter. He still wears blue markings up and down his arms, and his eyes are very tired.

“I want to see Ky,” Eli says.

“And you’re sure Eli’s immune?” I ask Anna.

She nods. “He doesn’t have the mark,” she says, “but none of us do.”

I step away from the cot so Eli can go around to the other side. He crouches down next to Ky and looks right into his eyes. “I live in the mountains now,” he tells Ky, and I have to turn away.

Anna points to my datapod. “Are you any closer to a cure?” she asks.

I shake my head. “I’m not helping,” I say. “I don’t know enough about the things on the lists. I can read the descriptions, but I don’t know what the plants and animals you eat look like.”

“And you think that matters?” Anna asks.

“I do,” I say.

“I can draw some pictures for you,” she says. “Show me the items on the list that you’ve never seen before.”

I pull out a scrap of paper and write them all down for her. It’s a long list and I feel embarrassed. “I’ll work on it right away,” she says. “Where should I begin?”

“Flowers first,” I say. It feels right. “Thank you, Anna.”

“I’m glad to do it,” she says.

“And thank you for coming to see Ky,” I tell Hunter. He shakes his head as if to say, It’s nothing. I want to ask him how he is, to find out more about what his life has been like here in the mountains, but he nods to me and leaves. I should go, too. I have more sorting to do, always, until we find a cure.

CHAPTER 36

KY

Every time she leaves, Cassia always promises that she’ll be back.

It feels like it’s been a long time since she was here, but I can’t really tell. Now that she’s gone, I hear other voices, like I heard Vick’s after he died on the bank.

This time it’s Indie talking to me, but that can’t be right because she’s not here.

“Ky,” she says. “I brought Cassia to Camas for you.”

“I know,” I say. “I know, Indie.”

I can’t see her. But her voice is so clear it’s hard to believe that it’s actually me, making this up. Because Indie can’t be here talking to me. Can she?

“I’m sick,” she says. “So I had to run. There’s still no cure.”

“Where are you running?” I ask.

“As far as I can before I go down,” she says.

“No,” I say. “No, Indie. Go back. They’ll find a cure. And you might have the old version of the illness. Maybe they can help you.” I can’t believe I’m telling her to do this, but what other choice is there?

She’s not going to listen to me.

“No,” she says. “It’s the mutation.”

“You can’t be certain,” I tell her.

“I can,” she says. “I’ve got red marks around my back. It hurts, Ky. So I’m running.” She laughs. “Or flying, you could say. I took a ship from the Pilot.”

I’m saying her name, over and over again, trying to stop her. Indie, Indie, Indie.

“Even when I hated you, I liked your voice,” she says.

“Indie—” I say one more time, but she doesn’t let me go on.

“Am I the best pilot you’ve ever seen?” she asks.

She is.

“I am,” she says, and I can tell from her voice that she’s smiling. She’s always so beautiful when she smiles.

“Remember how I used to think the Pilot would come on the water?” Indie asks. “Because my mother sang me that song.” Then Indie’s singing it for me, her voice strong and plain. “Any day her boat might fly /Across the waves and to the shore.” A pause. “I thought she might be trying to tell me that I could be the Pilot someday. So I built the boat and tried to escape.”

“Turn around,” I tell Indie. “Go back. Let them hook you up to keep you alive.”

“I don’t want to die,” Indie says. “Either they’ll shoot me down or I’ll get somewhere I can land and then I’m going to run until I can’t anymore. Don’t you understand? I’m not giving up. I’m just running until the end. I can’t go back again.”