The Twilight Herald, Book Two of the Twilight Reign by Tom Lloyd. The first book was a bit of an epic sword-n-sorcery tale. This one turned into Grimdark Fuel midway through. There was a fantasy setting, but much of it revolved around a city where the an enchantment had driven the citizens to the point of barely restained madness. After a few theatre performances ending in teh bloody execution of criminals, then priests, then any hapless old joe, the **** really hit the fan.
Its a nice dark fantasy series I think.