The Third in the Hugo, Nebula and Locus Award-Winning SeriesTwo worlds. One humanity. It's 1963, and riots and sabotage plague the space program. The climate change caused by the Meteor is becoming more and more clear, but tensions are rising, and the IAC's goal of getting humanity off Earth is threatened. Astronaut Nicole Wargin lives two lives; one as a politican's smiling wife on Earth, and the other as an astronaut on the newly-established Moon Base. But when sabotage strikes, she finds that her two worlds are colliding - with deadly consequences.