The Hold of the Lich Lord (d20)

From the introduction: An adventure for four 15th to 16th level player characters...Jaef the Dark used to be the power behind the ancient throne of Kale many centuries ago. He was slain but lived on in his phylactery until he was able centuries later to find a new body and rise again, taking on the anagrammatic name of Afej the Black. He then used his vast intelligence to seize one of the towns of Kelerak and raise an orcish army to gain control of a substantial portion of the kingdom. It is the lich's goal to rule the entire kingdom, and perhaps an empire. Enter the heroes.