Sisma, the beggar whose mind held the ancient legacy of the Forerunners, had escaped her claw-and-fang life in the Burrows, with the off-planet Rangers. But the Rangers wanted her in captivity for study by historians.
So Sisma and Zass, her winged hunting zorsal, escaped again, taking a stolen lifeboat to an unknown world. A desert where shapeshifting creatures lurked beneath the sand, where Zass and Sisma's hunting skills, psychic powers, and strange link to the Elder One in Sisma's mind were their only survival weapons.
Then Thom, the Ranger who saved - and perhaps betrayed - Sisma, crashed on the planet. Together, they realized that a mysterious, mind-threatening and possibly monstrous power had found them...
And only the Elder One could help.
Andre Alice Norton (1912-2005) was an American science fiction and fantasy author (with some works of historical fiction and contemporary fiction) under the noms de plume Andre Norton, Andrew North and Allen Weston. Norton published her first novel in 1934, and was the first woman to receive the Gandalf Grand Master Award from the World Science Fiction Society in 1977, and won the Damon Knight Memorial Grand Master Award from the Science Fiction and Fantasy Writers of America (SFWA) association in 1983.
Andre Norton. Wikipedia.