The Preservation of Species

A civilization-ending comet is headed for Earth. Two days before impact, thousands of mysterious pods land in a swath across North America. When people touch them, the pods open. Anyone who climbs inside is carried away. No one knows where the pods came from and no one knows where they go, but finding one is David Williams’ only chance to save his family from the end of the world … and escaping Earth is just the beginning.

Escaping Earth was just the beginning. Two days before a comet wiped out civilization, mysterious pods carried dozens of people to a strange menagerie inhabited by deadly specimens from Earth's past. Sierra Preston made first contact with an alien that had been observing humans from an invisible floating platform. The creature claimed the comet was sent by a race known as gorgers and warned that no one could leave the menagerie. Sierra isn't about to let that stop her.