Star Born

"The two voyagers were neither of the same race nor of the same species, yet they worked together without words, as if they had established some bond which gave them a rapport transcending the need for speech."

When Raf Kurbi's spaceship from Earth burst into unexplored skies of the far planet Astra, it was made welcome by the natives of a once-mighty metropolis. But Kurbi was unaware of three vital things: (1) that Astra already harbored an Earth colony - descended from refugees from the world of the previous century; (2) that these men and women were facing the greatest danger of their existence from a new outburst of the inhuman fiends who had once tyrannized Astra; and (3) that the natives who were buying Kurbi's science know-how were those very fiends - and their intentions were implacably deadly for all humans, whether Earth born or star born!

Much of the planet's hopes lie with young Dalgard Nordis and his companion, Sssuri, a telepathic native of this alien world. If they fail, their planet will be subjugated and enslaved by that inhuman race.

Here is a top-notch planetary adventure novel by science fiction grand master Andre Norton.