City of the Spider Queen

From the Back of the Book:

Daggerdale is reeling from a sudden series of murderous drow raids. As a grave threat to the entire surface world develops in the war-torn dark elf city of Maerimydra, intrepid heroes must discover its source and destroy it, if they can. Designed to take 10th level characters as far as 18th level, City of the Spider Queen draws the heroes into the deepest reaches of the Underdark and plunges them into an epic adventure with dire consequences.

13 new monsters
13 new magic items
16 page full-color map booklet

Expanded by;
Underdark Campaigns: Additional Encounters in the Deep Wastes