That data had been compiled by the invincible computer. With unwavering faith in the machine, humans had only one thing to do - destroy Lurion first.
And the man to do the job was Gardner. If he did it successfully the blood of billions would be on his hands; if he fouled up he would be the worst traitor in Terrestrial history. And not even he knew which course he would pursue when he finally learned that even the all-wise machine had not known all the right answers.
First published in 1959.