OUR CONTINUED EXISTENCE WAS NEVER A GIVEN.

Year after year, humanity has survived the main pitfalls awaiting us - natural disasters, nuclear war, rising seas. But when an alien artefact is found floating in Earth's orbit, it pushes our troubled world to the brink of chaos.

Is this a message in a bottle bringing peace and enlightenment from the stars? Or a warning, threatening to destroy what little stability mankind has achieved? The world is divided - holding its breath. Soon we will know the secret of existence.

Brilliant and gripping, David Brin's novel of the near future is the work of a modern master of science fiction.

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• Science Fiction & FantasyScience FictionGenetic Engineering
• Science Fiction & FantasyScience FictionAlien Invasion

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