Demons of the Dancing Gods - Jack L. Chalker

In Husaquahr, behind the cloak of seeming peace, evil was stirring again as the Dark Baron plotted with a Demon Prince to bring about Armageddon. Master Sorcerer Throckmorton P. Ruddygore could only trust one man with the mission of spying upon the evil villians: Joe. The only problem was, Joe had just been bitten by a weredog . . .