“The Museum of Civilization in the Severn City Airport.”

“Yes.” The conductor was quiet, looking at them. The forest was in shadow now, but there was still some light in the corridor of sky above the road, the last pink of sunset streaking the clouds. “I have been on the road for fifteen years,” she said, “and Sayid’s been with me for twelve. Dieter for even longer.”

“He was with me in the beginning,” Gil said. “We walked out of Chicago together.”

“I leave neither of them willingly.” The conductor’s eyes were shining. “But I won’t risk the rest of you by staying here a day longer.”

That night they kept a double watch, teams of four instead of two, and set out before dawn the following morning. The air was damp between the walls of the forest, the clouds marbled overhead. A scent of pine in the air. Kirsten walked by the first caravan, trying to think of nothing. A sense of being caught in a terrible dream.

They stopped at the end of the afternoon. The fevered summers of this century, this impossible heat. The lake glittered through the trees. This had been one of those places that wasn’t quite suburbia but wasn’t quite not, an in-between district where the houses stood on wooded lots. They were within three days of the airport now. Kirsten sat on a log with her head in her hands, thinking, Where are you, where are you, where are you, and no one bothered her until August came to sit nearby.

“I’m sorry,” he said.

“I think they were taken,” she said without raising her head, “and I can’t stop thinking about what the prophet was saying in St. Deborah, that thing about the light.”

“I don’t think I heard it. I was packing up.”

“They call themselves the light.”

“What about it?”

“If you are the light,” she said, “then your enemies are darkness, right?”

“I suppose.”

“If you are the light, if your enemies are darkness, then there’s nothing that you cannot justify. There’s nothing you can’t survive, because there’s nothing that you will not do.”

He sighed. “We can only remain hopeful,” he said. “We have to assume that the situation will become more clear.”

But four teams set out in search of dinner, and only three and a half returned.

“I turned and she was gone,” Jackson said of Sidney, the clarinet. He’d returned to the camp alone and shaken. They’d found a stream, Jackson said, about a quarter mile down the road in the direction from which they’d come. He’d knelt on the bank to fill the water container, and when he looked up she had vanished. Had she fallen in? No, he said, he would have heard a splash, and he was downstream, so she would have passed him. It was a small stream and the banks weren’t steep. There was just the woods all around him, a sense of being watched. He called her name but she was nowhere. He noticed then that the birdsong had stopped. The woods had gone still.

No one spoke for a moment when he’d finished telling the story. The Symphony gathered close around him.

“Where’s Olivia?” Lin asked suddenly. Olivia was in the back of the first caravan, playing with a rag doll. “I want you in my sight,” Lin whispered. “Not just within sight, within reach. Do you understand?”

“She was close with Dieter,” the first oboe said. This was true, and they were all silent, thinking of the clarinet and searching their memories for clues. Had she seemed like herself lately? None of them were sure. What did it mean to seem like yourself, in the course of such unspeakable days? How was anyone supposed to seem?

“Are we being hunted?” Alexandra asked. It seemed plausible. Kirsten looked over her shoulder into the shadows of the trees. A search party was organized, but the light was gone. Lighting a fire seemed too dangerous so they ate dinner from the preserved food stores, rabbit jerky and dried apples, and settled in for an uneasy night. In the morning they delayed for five hours, searching, but they couldn’t find her. They set off into another searing day.

“Is it logical that they could have all been taken?” August was walking beside Kirsten. “Dieter, Sayid, the clarinet?”

“How could anyone overpower them so silently?” There was a lump in her throat. It was difficult to speak. “Maybe they just left.”

“Abandoned us?”

“Yes.”

“Why would they?”

“I don’t know.”

Later in the day someone thought to search the clarinet’s belongings, and found the note. The beginning of a letter: “Dear friends, I find myself immeasurably weary and I have gone to rest in the forest.” It ended there. The date suggested that either it had been written eleven months earlier or that the clarinet didn’t know what year or month it was, one or the other. Neither scenario was unlikely. This was an era when exact dates were seldom relevant, and keeping track required a degree of dedication. The note had been folded and refolded several times, soft along the creases.