Unclean — Richard Lee Byers

In the magic-rich realm of Thay, an evil necromancer recruits the undead to his cause -- a cause that will change the face of Faerûn forever

The realm of Thay has long been ruled by the uneasy peace of an alliance of wizards, but all along there has been one who believes he is the true master: the lich Szass Tam. The head of the School of Necromancy, Tam is ready to overtake the Red Wizards and and place himself as Thay's sole ruler. When he finally moves against his former allies with an army of undead soldiers -- from zombies to lichs to vampires -- many fear that Thay is only the first of his many conquests.
 
Standing against him is the bard Bareris Anskuld and Aoth Fezim, a griffon rider and warmage. It falls to them to unite the wizards and citizens of Thay in a dangerous fight for their freedom, their survival, and their home.