The burning city

"Set in the world of Niven's The Magic Goes Away, The Burning City transports readers to an enchanted ancient city that often bears a provocative resemblance to our own modern society. Here Yagen-Atep, the volatile and voracious god of fire, holds sway, alternately protecting and destroying the city's denizens. In Tep's Town, nothing can burn indoors and no fire can start by accident - except when the Burning comes upon the city.

Then the people, possessed by Yagen-Atep, set their own town ablaze in a riotous orgy of destruction that often comes without warning." "Whandall Placehold has lived with the Burning all his life. Fighting his way to adulthood in the mean-but-magical streets of the city's most blighted neighborhoods, Whandall alone dreams of escaping the god's wrath to find a new and better life. But his best hope for freedom may lie with Morth of Atlantis, the enigmatic sorcerer who killed his father."