Legends of the Red Sun, book 1: Nights of VilljamurMark Charan Newton2009

The ancient city of Villjamur is threatened by a long-expected ice age, and thousands of refugees from the coming freeze are camped outside its gates, causing alarm and the threat of disease for the existing population. When the Emperor commits suicide, his elder daughter, Rika, is brought home to inherit the Jamur Empire, but the sinister Chancellor plans to get rid of her and claim the throne for himself. Meanwhile an officer in the Inquisition, in pursuit of a mysterious killer, also uncovers a conspiracy within the Council to solve the refugee crisis by wholesale slaughter, and a cultist magician is causing a trail of havoc in his search for immortality and his obsessive quest to gain access into another world.