Publisher's Synopsis
The alien spaceship was unthinkably huge, enormously powerful, apparently irresistible. It came from the void and settled on Earth, striking awe into the hearts of all who saw it. Its burden, however, was not conquest -- but a call for help!First contact was a job for the brilliant team of scientists, Arcot, Wade, and Morey, explorers of the Islands of Space. And what they learned was an offer of an alliance against an invading foe so powerful that no known force could turn them back
