A good fantasy has a well developed background, making a realistic world that includes politics, economy, religion, etc. - as well as swords and sorcery! A lot of fantasy writers fall down on these sort of background details, and religion especially is often just sketched in if not ignored entirely. But not with Harry Turtledove. The Videssos Empire is richly detailed, and it's religion is central to the story. The main character, Rhavas, is a senior cleric, something of a high-flyer, an accomplished academic and theologian. But everything he believes in is brought into question when the Empire succumbs to civil war and barbarian invasion. His prayers for peace and deliverance go unanswered. And then he discovers that he has the power to kill people with a curse. Turtledove documents Rhavas' descent from a high-minded orthodox cleric to a murderer, rapist and worshiper of dark gods - in parallel to the Empire's descent from peace and prosperity to anarchy and devastation. It's a powerful, absorbing and sometimes thought-provoking story. Unfortunately, it's only one in a series of novels about Videssos, and I haven't been able to track down the next (if it's yet been written) so I don't know how the story ends! Apart from that, though, I have only one minor quibble. There are several points where Turtledove breaks the flow of the story to tell us things about Rhavas' inner motivations that not even Rhavas knows. It's an unfortunate and (to my mind) rather clumsy method of introducing information in a story which is otherwise told with such skill.