Los Angeles, 2031: The first spring after the collapse of the United States, peacekeeping troops withdraw from the city, the Jacaranda trees blossom, and the curfew is finally lifted. Ari Waker and her roommate pass the gauntlet of bomb-sniffing dogs, the shanty towns, and the Red Cross tents as they walk across Silverlake to a party. The mood is ecstatic. But then a bewildered twin, an uncanny doppelgänger, stumbles through the crowd and out into the night, and Kareem, the party’s host, vanishes into thin air. As Ari unravels the mystery of this inexplicable night, Emily St. John Mandel unfurls a story that takes us from a future America splintered by civil war to the seaside cliffs of Greece where weapons dealers hide in an elegant resort, and from the domed city of Paris to a colony on the moon.