Hollowfaust
I recently bought the Hollowfaust book. It was Great! The city is creepy, and dark and patrols of the undead keep the nightly curfew. It's also one of the safest places to live on the whole continent. It is run by a council of Necromancers interested in nothing but their own benefit, but bright enough to realize that an efficient and honest civil service to handle the day to day running of the city competantly is to their benefit.
And some of those prestige classes.. A necromancerish prestige class for Bards! And the Unfailing. The Unfailing are a fighter based prestige class for the bodyguards of necromancers. They are not overpowered but damm they must look scary in game. (High Level Assasin with Dagger. "Hah, critical hit with my dagger take 60 points of damage" Unfailing "I'm immune to piercing criticals. What is the base damage?" "Uh, 4?" "So with my damage reduction, 2?") - In Game. The Assasin suddenly plunges his knife into the bodyguards heart in the middle of dinner and twists it to be sure of his death. The Bodyguard glances down at the hilt imbeded in his chest and comments "Dammit, that was a new shirt."
-Andor