The Witches of Wenshar Barbara Hambly Sun Wolf and Starhawk #2 Del Rey Books 1990
Once, it was said, Wensha had been a city of witches, summoning and controlling demons for their evil magic. But in nearby Tandieras, Kaltha claimed to have found their lost book of spells to perform only white magic.
When Sun Wolf arrived, he discovered increasing signs of evil magic and demon controlling spells. And he realized, too late, that a new swarm of demons was trying to lure him to his death....
