". . . Petra's world is ending. Earth has been destroyed by a comet, and only a few hundred scientists and their children - among them Petra and her family - have been chosen to journey to a new planet . . . Hundreds of years later, Petra wakes to this new planet - and the discovery that she is the only person who remembers Earth. A sinister collective has taken over the ship during its journey, bent on erasing the sins of humanity's past . . . [by] systematically purg[ing] the memories of all on board - or purging them altogether. Petra alone now carries the stories of our past, and with them, any hope for our future. Can she make them live again?" -- Adapted from jacket.
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