Now available in trade paperback, New York Times bestselling author Michael Crichton's classic science fiction thriller.

In the middle of the South Pacific, a thousand feet below the surface of the water, a huge vessel is discovered resting on the ocean floor. It is a spaceship of phenomenal dimensions, apparently undamaged by its fall from the sky. And, most startling, it appears to be at least three hundred years old. But even more fantastic--and frightening--is what waits inside...