In a not-too-distant future that is not quite ours, there has been a major scientific breakthrough. It is a way to open windows into the past, permitting historical researchers to view, but not participate, in the events of the past.

In one of the most powerful and thought-provoking novels of his remarkable career, Orson Scott Card interweaves a compelling portrait of Christopher Columbus with the story of a future scientist who believes she can alter human history from a tragedy of bloodshed and brutality to a world filled with hope and healing.