This is a classic science fiction novel by Edward Elmer Smith ("Doc
Smith"). 'They were four of the greatest minds in the Universe: Two men,
two women, lost in an experimental spaceship billions of parsecs from
home. And as they mentally charted the Cosmos to find their way back to
earth, their own loves and hates were as startling as the worlds they
encountered.' This work is part of our Vintage Sci-Fi Classics Series, a
series in which we are republishing some of the best stories in the
genre by some of its most acclaimed authors, such as Isaac Asimov,
Marion Zimmer Bradley, and Robert Sheckley. Each publication is complete
with a short introduction to the history of science fiction.