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Two hundred and eleven days into a deep-survey mission, systems specialist John Williams notices an anomaly flag at three forty-nine in the ship's morning. In the water hole frequency — the quiet band of the electromagnetic spectrum reserved for intentional interstellar communication — something is there.

What begins as a technical observation becomes the most significant discovery in human history. The signal has structure. The structure has meaning. And the meaning arrives in the most ancient possible form: the prime numbers, transmitted by something decelerating toward them.

Part One of six. The Midnight Frequency.

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