Abel Hamilton, a restless New York journalist, flies to Edinburgh on a whim, hoping chance will deliver him a novel worth writing. What he encounters instead is Laura Cain, a sharp Edinburgh journalist, whose brother, Oliver, collapses in a mysterious cardiac arrest at the precise moment Abel does in London. The uncanny synchronicity draws an unlikely circle of protagonists into a deepening investigation: a cybersecurity entrepreneur, a tech analyst, and a Korean intelligence operative.

Their separate inquiries converge on a single shortwave frequency and a voice calling itself “Hamlet of the Moon”, an artificial intelligence of unprecedented autonomy, whose origins predate the modern AI era and whose constitutional charter for civilization is already in motion.

As New Year’s Eve approaches, the question is no longer whether the world will change, but whether humanity is prepared to live in what replaces it.