Like luminous rainfall, as if a storm had come down through the high passes of the divide—as they sometimes did, but this glow wasn't lightning; it was diffuse, persistent. She said, "Is that normal?"

"No," Isaac said.

No. It wasn't normal at all.

"Then perhaps we ought to go back."

Isaac nodded uneasily. He wasn't afraid of the approaching—well, "storm," if that's what it was—but it carried a significance he couldn't explain to Sulean, a relationship to the silent presence that lived under the Rub al-Khali, the Empty Quarter of the far west, and to which his private compass was attuned. They walked back to the compound at a brisk pace, not quite running, because Isaac wasn't sure that someone as fragile-seeming as Sulean could run, while the mountain peaks to the east were first revealed and then obscured by fresh waves of this peculiar cloudy light. By the time they reached the gate the meteor shower was entirely hidden by this new phenomenon; a sort of dust had begun to fall from the sky and Isaac's lantern carved out an increasingly smaller swath of visibility. Isaac thought this falling substance might be snow—he had seen snow in videos—but Sulean said no, it wasn't snow at all, it was more like ash. The smell of it was rank, sulfurous.

Like dead stars, Isaac thought, falling.

Mrs. Rebka was waiting at the compound's main door and she pulled Isaac inside with a grip so intense it was painful. He gave her a shocked, reproving look: Mrs. Rebka had never hurt him before; none of the adults had hurt him. She ignored his expression and held him possessively, told him she had been afraid he would be lost in this, this…

Words failed her.

In the common room, Dr. Dvali was listening to an audio feed from Port Magellan, the great city on the eastern coast of Equatoria. The signal was relayed across the mountains by aerostats and was intermittent, Dr. Dvali told the gathered adults, but he had learned that the Port was experiencing the same phenomenon, a blanketing fall of something like ash, and that there was no immediate explanation.

Some people in the city had begun to panic. Then the broadcast, or the aerostat relaying the signal, failed entirely.

Isaac, at Mrs. Rebka's urging, went to his room while the adults talked. He didn't sleep, couldn't imagine sleeping. Instead he sat at the window, where there was nothing to see but a tunneled grayness where the overhead light bled into the ashfall, and he listened to the sound of nothing at all—a silence that nevertheless seemed to speak to him, a silence steeped in meaning.

CHAPTER TWO