R.A. Salvatore's War of the Spider Queen6 books in series
Dissolution Publisher's Summary
The War of the Spider Queen begins here.
While their whole world is changing around them, four dark elves struggle against different enemies. Yet their paths will lead them all to the most terrifying discovery in the long history of the drow and set them on a quest to save not only Menzoberranzan but the entire dark elf race from Dissolution....