Undead: The Haunted Lands, Book II

In the sequel to Unclean, the citizens of Thay rally together to thwart the undead hordes attacking their home
 
What started as one wizard’s ambition to take over the ruling council has become a vicious civil war that breeds a monstrous army of undead. And while the undead have always been part of life in Thay, after ten years of constant battles, they have come to outnumber the living.
 
As the undead armies mass and march to the beat of an evil necromancer's drum, the living citizens of the magic-rich realm must unite and mount a defense before they die and join their enemy's ranks.