From Amazon.com:
The eagerly-awaited sequel to The Heritage of Hastur and Sharra's Exile. Margaret Alton, daughter of the Darkovan representative to the Terran Imperial Senate, remembers almost nothing about the planet of her birth or her tumultuous childhood. What fleeting memories she has are fragments of terror -- a strange silver man and a screaming woman with hair that circled her head like a ring of fire. Now her work has taken Margaret back to Darkover, where she must fight against inner voices that are trying to control her as she unravels the secrets of her heritage -- and her destiny.