When the oppressive global dictatorship of Pax took over Earth they put a stop to space exploration. Still, a few rebels escaped in the sleeper ships to found free new colonies -- or perish in the attempt. Those few colonists that reached inhabitable worlds were cut off for centuries, and in that isolation and freedom they developed the mysterious mental powers that ''civilization'' had all but destroyed.

Andre Alice Norton was an American writer of science fiction and fantasy, who also wrote works of historical and contemporary fiction. She wrote primarily under the pen name Andre Norton, but also under Andrew North and Allen Weston. She was the first woman to be Gandalf Grand Master of Fantasy, to be SFWA Grand Master, and to be inducted by the Science Fiction and Fantasy Hall of Fame.