In this unforgettable space opera, #1 New York Times bestselling author George R. R. Martin presents a chilling vision of eternal night--a volatile world where cultures clash, codes of honor do not exist, and the hunter and the hunted are often interchangeable.
For twelve thousand years the Galactic Empire has ruled supreme. Now it is dying. But only Hari Sheldon, creator of the revolutionary science of psychohistory, can see into the future--to a dark age of ignorance, barbarism, and warfare that will last thirty thousand years.