She isn't sure of much else… only that the wallscreen shows an outside view that is barren and swirling with toxic clouds. Most of the others seem content—except for the ones who jump to their death from the hundred-level spiral staircase. And the ones that are pushed. After the doctor prescribes a special liquid and tells her to avoid tap water, Karma begins to remember a very different world. Despite the fog in her mind, she is convinced that something came before. Such memories are dangerous to talk about, or even to know. She must figure out who can be trusted. The doctor… her husband… or no one at all.

    The world has succumbed to an alien plague, with most of the population transformed into mindless, savage creatures. The planet’s refugees flock to Darwin, where a space elevator—created by the architects of this apocalypse, the Builders—emits a plague-suppressing aura.Skyler Luiken has a rare immunity to the plague. Backed by an international crew of fellow “immunes,” he leads missions into the dangerous wasteland beyond the aura’s edge to find the resources Darwin needs to stave off collapse. But when the Elevator starts to malfunction, Skyler is tapped—along with the brilliant scientist, Dr. Tania Sharma—to solve the mystery of the failing alien technology and save the ragged remnants of humanity.