TSR Code:

'Matron Baenre wants revenge.  As she prepares an assault on Drizzt Do'Urden and Mithril Hall, the Time of Troubles hits and Lloth, the Spider Queen herself, walks the streets of Menzoberranzan! When the laws of magic turn horribly erratic, the mystical city is thrown into chaos more cruel than even the dark elves can bear.  As the ruling houses tremble, one family unleashes potent nonmagical forces and rises to power. 
In Mithril Hall, as Bruenor Battlehammer prepares to meet the dark elves' siege, Drizzt finds Guenhwyvar locked in the Astral Plane, and Cattie-brie is caught in wild, horrific dreams.  Only an ancient dwarven king, allies from the depths, and Drizzt's own quick thinking can save them from the Spider Queen's minions'.

Also released in Paperback format.

Other titles in The Underdark Series:

• The Legacy
• Starless Night
• Passage to Dawn
• Daughter of the Drow
• Tangled Webs
• The Silent Blade